An absolute stunner of a day is on tap Tuesday as a strengthening low-pressure system accelerates away from New England while quickly helping pull in high pressure to set up a great day across Boston. It will be a little hotter than usual, though, with highs in the upper 80s with a chance to hit 90.
You can expect mostly clear skies with sinking air keeping cloud coverage at bay. And you’ll quickly notice the air being quite comfortable when you step out the door.
This airmass will pack some welcomed dry air as high pressure builds, marking the first day since June 16 that dew points are below 60 degrees.
Typically, you expect cooler temps with a passing cold front, especially with air coming from the northwest. However, a pocket of warm air aloft will sink to the surface with this setup — combine that with plenty of clear skies for maximum sunshine, then you’re looking at temperatures reaching the upper 80s today.
The winds should stick below 10 miles per hour for much of the day and slowly shift from the northwest to the west, keeping the dry, comfortable air funneling across the region through sunset.
A quick change in patterns will introduce an even warmer day on Wednesday, with the chance to break 90 degrees across Boston, as another system approaches from the west and reintroduces a southwesterly flow. There’s a chance for evening showers and thunderstorms after a mostly dry day.
Tuesday’s breakdown
Southern New England: Much of the area will see mostly sunny skies with temperatures ranging between the mid- and upper-80s. Dew points will improve and drop mostly into the 50s. Clouds will begin to build late, but the day should remain dry.
Western Mass.: Temperatures still settle in the mid-80s across the Berkshires but jump to near 90 across the Pioneer Valley and into central Connecticut. Mostly sunny skies will turn to partly cloudy with dew points improving to the mid-50s.
Cape and Islands: Temperatures will likely come close or slightly exceed 80 degrees with mostly sunny skies. A breeze will stick around to 15 mph with dew points hovering around 60.
Northern New England: A mostly sunny day with clouds building throughout the afternoon. Temperatures will likely settle in the mid-80s with the chance for evening showers across Vermont while New Hampshire and Maine stay dry.
Ken Mahan can be reached at ken.mahan@globe.com. Follow him on Instagram @kenmahantheweatherman.
