Boston weather forecast: ‘Significant cool down’ as fall arrives, Hurricane Fiona could spark rough seas along Cape Cod

It’s as if Mom Nature is aware of when the calendar is formally turning to fall.

Proper on schedule within the Boston space, it’s going to flip from summer-like temperatures over the weekend to autumn-like temps as the primary day of fall approaches this week. Temps on Monday ought to drop into the 60s.

“We’ll have cooler situations on Monday throughout jap Massachusetts as a backdoor chilly entrance comes by the area,” Matthew Belk, meteorologist on the Nationwide Climate Service’s Boston workplace, instructed the Herald.

In the meantime, because the backdoor chilly entrance stalls throughout southern New England, some much-needed rain showers and scattered thunderstorms are anticipated to develop Monday afternoon. The area continues to be dealing with a extreme drought, so any rain is welcomed.

A number of lingering showers and thunderstorms might final into Tuesday earlier than issues dry out. Temps on Tuesday ought to stay within the mid-60s.

Then the decide of the week might be on Wednesday with partly sunny skies within the low 70s. One other spherical of showers and thunderstorms is feasible Wednesday night time into Thursday forward of a powerful chilly entrance.

The coldest air of the season up to now will arrive Friday simply in time for fall, with excessive temps struggling to get out of the 50s. So the primary full day of astronomical autumn will really feel like fall.

“We’ll have a major calm down Friday into the weekend,” Belk stated.

Forward of the beginning of fall, Hurricane Fiona is gaining steam close to Puerto Rico, and will affect the East Coast by the top of the week. Fiona might produce 12 to 16 inches of rain, presumably as much as 25 inches, over parts of Puerto Rico — triggering excessive life-threatening flooding threat.

The Nationwide Hurricane Heart reported that “catastrophic flooding” is predicted.

“There’ll most likely be some tough surf right here,” Belk stated in regards to the native Cape Cod impacts. “We’ll must see what swells it can generate, however there’ll most probably be tough seas at seashores as we get into the later a part of the week.”