The autumnal equinox will occur tomorrow morning at 10:49 a.m., marking the official end of summer and the beginning of fall. Meteorologically, the beginning of fall in New England is usually marked by the end of heat waves and thunderstorms, a slow decline in temperatures, and a general increase in windiness. This weekend’s weather will be seasonable and pleasant, with sunny skies and temperatures in the 60s and 70s °F.
Sunshine will be abundant this afternoon, but a crisp breeze coming in from the Massachusetts Bay will keep temperatures in the 60s throughout the afternoon. Some showers are expected to pass offshore early tomorrow morning, but southwesterly flow will bring warm air into the area during the day on Saturday. Finally, a cold front will pass through the area on Sunday, bringing with it the possibility of showers, and the return of cooler temperatures for the start of next week.