California
Historic March Heat Wave Smashed Records From California To The East | Weather.com
How Many More Records Could Fall This Week?
The most prolific March heat wave in at least 14 years has already smashed monthly records in almost 180 cities from the Southwest to the Plains and East, and will have staying power in the Southwest and Plains this week.
(MAP: Temperatures Right Now)
First, let’s recap the incredible records we’ve seen shattered so far. Then we’ll look and see how long this heat will last.
New US March Heat Record
Before this heat wave, the hottest March temperature on record anywhere in the U.S. had been 108 degrees in Rio Grande City, Texas, on March 30, 1954, and on March 14, 1902.
But at least one location in the U.S. tied or exceeded that March national record four days in a row from March 18 through 21.
On March 20, four reporting stations in the lower deserts of southeast California and southwest Arizona hit 112 degrees, shown in the map below. You can’t make it up that one of these stations was near the town of Winterhaven.
These highs were only one degree shy of tying the April U.S. record high set at Death Valley, California, according to weather historian Christopher Burt. And that happened in late April — April 22, 2012 and April 24, 1946.

March Statewide Records
It also appears that the hottest March temperatures on record in 14 states were either tied or broken.
We touched on the California and Arizona records above (112 degrees) as national records, but among some other state records that appear to have been tied or set include:
- Nevada: 106 degrees on March 21
- Colorado: 96 degrees on March 21
- Nebraska: 99 degrees on March 21
- Missouri: 97 degrees on March 21
- Minnesota: 88 degrees on March 21
The other states are shown on the map below.
For bigger state or national records like these, an ad hoc committee of meteorologists and climatologists is usually convened to examine the data and the reporting station before it becomes a new, official record.

City March Records
Almost 180 locations with data since the 1960s or earlier have tied or set new March records from California to Pennsylvania to South Carolina during this heat wave.
Some of those records are shown in the map below from NOAA’s Weather Prediction Center.
Phoenix only had one March day of triple digit heat on record prior to this heat wave. They hit the 100s seven days in a row from March 18-24, topping out at 105 degrees on March 20 and 21. Incredibly, that’s equal to their April monthly record, which was set almost a month later in the calendar on three dates ranging from April 20-29 in three past years.
Other major cities that tied or set new March records included San Francisco’s first March 90-degree high downtown, Las Vegas (97 degrees), Salt Lake City (84 degrees), Boise (83 degrees) and Denver (85 or 86 degrees for three straight days).
It wasn’t just a western heat wave.
March records were tied or set in Lubbock, Texas (98 degrees), Kansas City (93 degrees), Des Moines, Iowa (91 degrees), Nashville, Tennessee (89 degrees), Louisville, Kentucky (89 degrees), Indianapolis, Indiana (88 degrees), Columbus, Ohio (86 degrees), Pittsburgh (84 degrees), and Charleston, South Carolina (90 degrees).
Perhaps the most extraordinary record heat east of the Rockies happened in Nebraska on March 21.
Both Lincoln and Omaha not only demolished their March record, after reaching 97 degrees in Lincoln and 96 in Omaha, but it also tied their April record.
Many of these almost 180 cities tied or topped their previous March records multiple days in a row. Flagstaff, Arizona, reached or topped their previous March record of 73 degrees a staggering eight days in a row from St. Patrick’s Day through Tuesday. Las Vegas did that seven days in a row through Tuesday.
Several of these cities reached the 80s, 90s, or 100s for the first time in their recorded history.
Last weekend, parts of the Plains, were as much as 45 degrees warmer than average.
This is likely the most significant, long-lived March heat wave the nation has experienced since the March 2012 heat wave rewrote the record books in the central U.S. and Canada.

A sign warns hikers of trail closures due to extreme heat at Camelback Mountain on Thursday, March 19, 2026, in Phoenix.
(AP Photo/Rebecca Noble)
There’s Still More Ahead In This Heat Wave
This heat wave isn’t over.
Another pulse of heat is surging into parts of the Plains and South this week, while continuing to bake the Southwest.
We’re expecting many dozen more daily record highs from California possibly as far east as parts of Georgia and the Carolinas.
Incredibly, some new March records could be set in a few areas, though last week’s heat set a much higher bar.
Some cities that could once again flirt with March record highs include Cheyenne, Denver and Amarillo. On Thursday, St. Louis could approach its March record (92 degrees) on Opening Day, no less, a record set 97 years ago.
(MORE: Heat Safety And Preparation)

How hot are we talking about?
Triple-digit highs: Parts of the Desert Southwest, including Phoenix, and the lower Colorado River Valley could again see triple digit heat through much of this week. A few of the hottest spots in western Texas, possibly southwest Oklahoma, could reach 100 degrees around Thursday.
90s: This searing heat will spread out from the Desert Southwest into the Plains from Nebraska to Texas to parts of the mid-Mississippi Valley through Thursday.
(MAPS: 10-Day US Forecast Highs, Lows)
Relief?
Yes, there is finally relief in sight.
A late week cold front should remove the heat from the Plains and Rockies, however, above-average warmth will rebuild back into the Plains, South and Midwest this weekend.
The Southwest will have to be more patient. While daily record warmth is possible through the weekend, a pattern of somewhat cooler temperatures, even some rain and showers are possible in the West, including California and Arizona, next week.

Long-Range Temperature Outlook (NOAA’s Climate Prediction Center)
Why So Hot So Soon?
The reason for this heat wave in particular has to do with the ridge of high pressure, also known as a heat dome, that was parked over the West.
This heat dome is record-breaking for March, comparable in strength to ones we see in June. You can see the general position of the high pressure on the satellite loop below in the darker shading.
Jonathan Erdman is a senior meteorologist at weather.com and has been covering national and international weather since 1996. Extreme and bizarre weather are his favorite topics. Reach out to him on Bluesky, X (formerly Twitter) and Facebook.
California
California’s race for governor and other key primaries remain unsettled as vote count continues
California’s crowded, protracted gubernatorial primary is going to take a little more time to settle.
The race remained too early to call Wednesday morning with 50% of the expected vote counted, according to NBC News’ Decision Desk. Three main candidates — former Fox News host Steve Hilton, a Republican, and two Democrats, former Health and Human Services Secretary Xavier Becerra and billionaire activist Tom Steyer — are competing for two spots in the general election, with the candidate in fourth place, Republican Riverside County Sheriff Chad Bianco, running well behind.
Hilton had 27% support in the all-party primary with about half of votes still left to count, while Becerra had 26% and Steyer had 20%. Bianco was the only other candidate in double digits, at 11%.
In California, all candidates run on the same primary ballot in the primary and the top two vote-getters, regardless of party, move on to the general election.
It’s difficult to say when it will be clear which two candidates advance to the November general election, however, due to the state’s protracted vote counting.
And with millions of ballots left to count, other key races in California remain uncalled as well, including the second runoff spot to face Los Angeles Mayor Karen Bass one on one in November, several House races that could help determine the majority next year, and more.
In the governor’s race, all three candidates rallied supporters around the state as the evening drew on.
“We’re not there yet, but it’s looking good,” Hilton told allies. “It looks very much as if Californians really will have the chance to vote for change in November and take our state in a new direction, a fresh start for our state, which is long overdue.”
But while Hilton was narrowly in first place when he spoke, Democratic candidates were capturing the majority of the votes.
Becerra looked back at his own “underdog story,” from his immigrant relatives to his bid for governor, which took some time to catch fire.
“Almost immediately, he’s counted out, an afterthought, overlooked by many, outspent by a ton, even called along the way to drop out and save us the trouble,” Becerra recounted to his supporters. “Well, guess what? The underdog stayed in the fight. Like my parents, I never gave up.”
Steyer struck a hopeful note in his election night speech despite a deficit in the vote count.
“It might take some time to figure out where this is going, we’re going to wait till every ballot is counted, we’re going to give democracy a time to work, and we know we finished really strong,” Steyer said.
Major battleground districts
GOP Rep. David Valadao’s district has been one of Democrats’ top targets for years, but two Democrats are locked in a close race for the second spot in the November general election against the incumbent.
School board member Randy Villegas, who won support from national progressives, has a slight lead over state legislator Jasmeet Bains, 30% to 26%, with less than half of the expected vote tallied in the 22nd District. Valadao is comfortably in first place.
And in Northern California’s 6th District, Rep. Kevin Kiley — who was elected as a Republican and switched to become an independent this election cycle, as he runs in another newly redrawn district — is bunched up in a tight race that includes Democrat Richard Pan, a former state legislator, and Republican Michael Stansfield. Currently, Stansfield is running ahead of Pan; they spent much of Tuesday night and Wednesday morning trading the lead, which could have significant general election implications.
Meanwhile, outside California, Democrats think they might be able to challenge for one of Montana’s red-tinted congressional districts this fall, after Rep. Ryan Zinke decided to retire. But less than 2 percentage points separate Democrats Sam Forstag and Ryan Busse with more than 85% of the expected vote tallied in their primary in Montana’s 1st District.
Read more about Tuesday’s House primaries here.
A safe seat battle to watch
Plenty of other House districts in California — and a few elsewhere — still have unsettled primaries, but one attracted particular attention due to how nasty the campaign got.
In Southern California, where two Republican incumbents are facing off in one district due to redistricting, Rep. Ken Calvert has advanced to the general election, but Rep. Young Kim is still battling for the second spot. She leads Democrat Esther Kim-Varet in the race for second, 22% to 16%, with about half of the vote in.
Who will face Bass in Los Angeles?
While Bass is projected to advance to a November runoff in Los Angeles, it’s not yet clear whether she’ll face Republican Spencer Pratt or Democrat Nithya Raman.
Bass has about 37% of the vote to 29% for Pratt and 21% for Raman so far, with approximately half of the expected vote tallied.
Speaking to supporters on election night, Raman, a member of the Los Angeles City Council, said that “tonight may not give us a final answer on this race.”
“Many thousands of votes will be counted in the days ahead, and we may not get an answer we like, but regardless of what happens next, nobody, nobody can take away what all of us have built together,” she continued.
Pratt, meanwhile, was looking ahead to a potential matchup with Bass when he spoke to reporters.
“Now I have five months to get deep into every community that hasn’t heard my message to make them safe,” said Pratt, a former reality TV star. “So I’m actually very excited, because I felt very rushed. It’s a big city, and I was not able to talk to as many people as I look forward to talking to.”
Bass also projected optimism, telling her backers, “We got a lot more to go, but so far it’s looking good.”
California
Midterm primaries 2026 live: results and reaction after six states including California and Iowa cast ballots
Lucy Campbell
Millions of voters across the country are heading to the polls today in crucial primaries in a slew of key gubernatorial, Senate and House races.
Here’s a quick rundown of what we’re watching:
California
Voters are casting ballots on who should lead the nation’s most populous state (and the world’s fourth largest economy), where there is no clear leader among candidates vying to advance in the race to succeed term-limited Democratic governor Gavin Newsom. The race for Los Angeles mayor is also on the ballot, along with a series of high-stakes US House contests in the state’s newly redrawn congressional districts – which are set to play an outsized and potentially decisive role in the battle for power in Washington in November’s midterm elections. My colleague Lauren Gambino has more:
Iowa
Per my colleague Chris Stein, with Trump’s approval ratings deep underwater, gas prices high and historical political trends favoring the party out of power, Democrats this year are considering a comeback in Iowa, putting the state at the center of their campaigns to win back control of both the US House and the Senate. That effort for a “once-in-a-generation” breakthrough in the GOP-dominated state is being led by pro-hunting Democrat Rob Sand, who is running for governor. Chris wrote about him below. Democrats also believe they have a shot at winning three of the state’s US House seats and a competitive chance at securing a US Senate seat, where the GOP frontrunner recently called Trump’s war on Iran a “political liability”.
New Jersey
One of this year’s most closely watched House midterms will take place in the battleground district currently represented by now-infamous Republican Tom Kean Jr, who has drawn public scrutiny and concern after missing more than 100 House votes due to an undisclosed illness. Voters are deciding which Democrat will run against him in November – and the seat is a must-win for the party. The frontrunner, veteran army trauma surgeon and political newcomer Adam Hamawy, has secured endorsements from the likes of Bernie Sanders, Alexandria Ocasio-Cortez and Ilhan Omar. My colleague Joseph Gedeon has more:
New Mexico
Contests in the state include primaries for congressional seats, a US Senate seat and a long list of statewide offices, but the governor’s race is the main event. Deb Haaland, who was Joe Biden’s interior secretary, is running for the Democratic nomination, which could put her on a historic path for Native American leaders.
Montana
In Montana, a five-way Democratic fight is under way for the retiring Republican senator’s seat. Independent Seth Bodnar, former president of the University of Montana, is outraising them all at the moment but they’re refusing to step aside, Politico reports this morning.
South Dakota
The race is on for state governor, Sioux Falls mayor, a US Senate and House seat, a Republican primary for local lawmakers. The incumbent GOP governor Larry Rhoden faces three primary challengers in his first run for a full term. He stepped up into the role from the lieutenant governorship when the former governor, the since-ousted Kristi Noem, left to lead the Department of Homeland Security.
The Associated Press contributed reporting
Key events Joseph Gedeon
On the day Donald Trump endorsed him as a tireless advocate for New Jersey’s seventh district, the representative Tom Kean Jr was, as he has been since early March, nowhere to be found.
Kean, a New Jersey Republican, was last seen when he cast a House floor vote on 5 March, and he is running unopposed in Tuesday’s Republican primary. The Democratic race in his district, meanwhile, has attracted multiple candidates and ample fundraising.
In late April, his office said he was dealing with a “personal medical issue” and would be back “very soon”. He told the New Jersey Globe last month he expected to return within “the next couple of weeks”. In the meantime, Kean’s social media accounts have continued posting regularly, with staff attending ribbon-cuttings and graduation ceremonies on his behalf. In my home state of New Mexico, voters from both parties will nominate candidates to become the next governor, as Michelle Lujan Grisham is set to step down from the seat she’s filled since 2019. Increasingly recognized as a solidly blue state, the Democratic nominee is likely to win the general election.
Democratic voters will choose to nominate either Deb Haaland, who served as Joe Biden’s interior secretary, or Sam Bregman, the Bernalillo County district attorney. Haaland has polled safely in the lead in the run-up to the election. Her win would be a victory for Native American advocates across the country and a rebuke of the Trump administration.
A single, working mother, Haaland came on the national scene in 2018 when she was elected to Congress alongside a wave of freshman, female lawmakers known as “The Squad” who’d run in reaction to Donald Trump’s election in 2016. Haaland resigned from the House of Representatives in 2021 when Joe Biden chose her to lead his interior department, making her the first Native American to serve in the roll, which includes overseeing much of the nation’s public lands and the Bureau of Indian Affairs.
During her time in congress, Haaland – who is from Laguna Pueblo – introduced legislation to stem the crisis of Missing and Murdered Indigenous People, and as interior secretary she oversaw the formation of a new Missing & Murdered Unit (MMU) within the Bureau of Indian Affairs. Last year, New Mexico became the fourth state in the country to create its own law enforcement alert system for missing Indigenous people. Haaland also launched a historic effort to investigate the legacy of Native American boarding schools.
If elected in the November general election, Haaland would become the first Native American woman governor elected in the country. Haaland has campaigned as a fierce critic of Donald Trump, saying in campaign ads that, “Governors are the first line of defense against the horrific policies of the Trump administration.” Since Trump returned to office, New Mexico has been one of few Democratic strongholds in the south-west – with the state working to shore up protections for abortion patients, transgender people and SNAP and Medicaid recipients.
California’s primary elections, including its fiercely fought gubernatorial contest, will be at the mercy of a notoriously slow vote-counting system after the polls close on Tuesday, and it could be days or even weeks before the outcomes of the tightest races become clear.
Voting experts expect the state’s 58 county elections offices to be deluged with last-minute absentee ballots, as they have been in the last few election cycles, and spend weeks undertaking a painstaking ballot-by-ballot verification process. That presents a procedural problem whenever races are close, as they tend to be in the state’s most competitive congressional districts, and the whole country is left waiting – as it was in 2020, 2022 and 2024 – to find out which party controls the House of Representatives.
Knocking on strangers’ doors on a warm May afternoon in Trenton, New Jersey, Adam Hamawy did not seem fazed when more than a few went unanswered.
It’s his first time running for office, but this is an area where he has experience. After returning from a medical mission in Gaza in 2024, Hamawy went to Washington to describe the crisis – which he viewed as a US-funded genocide – to lawmakers, only to encounter “too many doors that were closed, that didn’t even want to listen”.
“I could only define it as a genocide, because I saw the bodies of the people that came in,” the veteran army trauma surgeon and political newcomer reflected, while walking between houses. “And it wasn’t an accident. You can’t have an accident, every single day for three years.
Rob Sand, the best known Democrat in Iowa, is running to lead a state that Republicans have come to dominate under Donald Trump, and Democrats believe his candidacy for governor could be the breakthrough needed to win key Iowa offices in the November midterm elections. With Trump’s approval ratings deep underwater, gas prices high and historical political trends favoring the party out of power, Democrats this year are considering a comeback in Iowa, putting the state at the center of their campaigns to win back control of both the US House of Representatives and the Senate. On Tuesday, voters will cast ballots in primary elections that set the stage for months of what is likely to be fevered campaigning by candidates of both parties.
“I think this is a once-in-a-generation opportunity for us to be able to win here in Iowa. I mean, this is a state that has completely hit the bottom,” said Josh Turek, a state representative who is one of two Democrats vying to represent Iowa in the US Senate.
Voters in six states have been casting their ballots in the US midterm election primaries. Here are some of the images from polling stations that have dropped on the news wires today:
Fabiola Cineas
A wave of Democratic doctors, scientists and public health professionals across the country are seeking office in the midterm elections in a rebuke to Donald Trump and Robert F Kennedy Jr’s health policies. They share a diagnosis of what ails American governance – disinformation, funding cuts and the rollback of research, among other things – and the belief that their clinical and scientific training equips them to treat it.
They have watched the Trump administration’s health policies play out in their exam rooms, their labs and the communities they serve, and they want to stop the bleeding.
Uwa Ede-Osifo
In California, voters can select any candidate among the long list of gubernatorial hopefuls, regardless of which party they have registered with.
The system was put in place under former governor Arnold Schwarzenegger, who supported the open primary, or “jungle primary”, as a way to create more competition in races that Democrats won year after year. Schwarzenegger, who left office in 2011, was the last Republican elected to statewide office in California. In a crowded race like this year’s gubernatorial primary, the system could cause some unexpected results – such as the possibility that emerged earlier this year of two Republicans advancing to the general election in deep blue California.
That situation now appears unlikely, but the possibility has prompted some Democrats to push to overhaul the way the state votes.
Lucy Campbell
Millions of voters across the country are heading to the polls today in crucial primaries in a slew of key gubernatorial, Senate and House races.
Here’s a quick rundown of what we’re watching: California Iowa New Jersey New Mexico Montana South Dakota The Associated Press contributed reporting
Explained: what is California’s ‘jungle primary’?
Voters are casting ballots on who should lead the nation’s most populous state (and the world’s fourth largest economy), where there is no clear leader among candidates vying to advance in the race to succeed term-limited Democratic governor Gavin Newsom. The race for Los Angeles mayor is also on the ballot, along with a series of high-stakes US House contests in the state’s newly redrawn congressional districts – which are set to play an outsized and potentially decisive role in the battle for power in Washington in November’s midterm elections. My colleague Lauren Gambino has more:
Per my colleague Chris Stein, with Trump’s approval ratings deep underwater, gas prices high and historical political trends favoring the party out of power, Democrats this year are considering a comeback in Iowa, putting the state at the center of their campaigns to win back control of both the US House and the Senate. That effort for a “once-in-a-generation” breakthrough in the GOP-dominated state is being led by pro-hunting Democrat Rob Sand, who is running for governor. Chris wrote about him below. Democrats also believe they have a shot at winning three of the state’s US House seats and a competitive chance at securing a US Senate seat, where the GOP frontrunner recently called Trump’s war on Iran a “political liability”.
One of this year’s most closely watched House midterms will take place in the battleground district currently represented by now-infamous Republican Tom Kean Jr, who has drawn public scrutiny and concern after missing more than 100 House votes due to an undisclosed illness. Voters are deciding which Democrat will run against him in November – and the seat is a must-win for the party. The frontrunner, veteran army trauma surgeon and political newcomer Adam Hamawy, has secured endorsements from the likes of Bernie Sanders, Alexandria Ocasio-Cortez and Ilhan Omar. My colleague Joseph Gedeon has more:
Contests in the state include primaries for congressional seats, a US Senate seat and a long list of statewide offices, but the governor’s race is the main event. Deb Haaland, who was Joe Biden’s interior secretary, is running for the Democratic nomination, which could put her on a historic path for Native American leaders.
In Montana, a five-way Democratic fight is under way for the retiring Republican senator’s seat. Independent Seth Bodnar, former president of the University of Montana, is outraising them all at the moment but they’re refusing to step aside, Politico reports this morning.
The race is on for state governor, Sioux Falls mayor, a US Senate and House seat, a Republican primary for local lawmakers. The incumbent GOP governor Larry Rhoden faces three primary challengers in his first run for a full term. He stepped up into the role from the lieutenant governorship when the former governor, the since-ousted Kristi Noem, left to lead the Department of Homeland Security.
California
California Democratic gubernatorial candidate criticized over meeting with trans athlete | Fox News Video
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