Weather week: A ‘very seasonable’ Earth Day, possible rain midweek

The Massachusetts region is setting to mostly dry out and hit a late frost advisory before settling into seasonably warm highs heading into Earth Day, the National Weather Service forecasted.

“It’s going to be very seasonable, very normal for late April,” said Rob Megnia, a meteorologist with the National Weather Service’s Boston office. “It will be dry for most of the week, with the exception of Wednesday. We are expecting some likely widespread showers, but not an impressive precipitation event.”

In Boston, the highs for the week will range in the upper 50s and low 60s through Wednesday, NWS forecasts, before dropping a little to low 50s on Thursday.

Much of Southeast Massachusetts, Cape Cod and Rhode Island, areas that don’t typically get frost this late in the year, will fall under a frost advisory Sunday night into Monday, Megnia said. The frost advisory will remain for the region until 7 a.m. Monday as temperatures dip as low as 34 degrees through the night, potentially harming “sensitive outdoor vegetation,” the NWS advisory notes.

“We haven’t started issuing those for interior Northwestern Mass yet because it’s still common to get frost at this point in the year,” Megnia said.

Earth Day is set to be a mostly sunny beautiful day, with a high of 62 degrees — perfect for people looking to get outside and find activities to enjoy the environmental holiday.

Temperatures are down a bit from the “well above normal” highs early last week — reaching 70 degrees on the Boston Marathon race day — and continuing a trend closer to climatological averages, Megnia said.

After the bout of weekend rain, skies look set to remain mostly clear and sunny for the first half of the week.

Wednesday looks to be the exception, predicted to be a “wet, rainy day for most of southern New England including Boston” in the middle of a mostly dry week, Megnia said.

“Then Wednesday night as that system producing the rain exits, we may have a brief period of some gusty northwest winds maybe up to 30 miles per hour,” Megnia said. “But that’ll be followed by rapid clearing and sunny dry weather heading into the weekend.”