Massachusetts – A sharp December chill grips Boston this morning, where brisk northwest winds funnel in air straight from Canada. Skies stay mostly cloudy early, but temperatures will fall sharply through tonight, setting up a bitterly cold start to the week.
The National Weather Service in Norton reports calm conditions today with highs near 37°F, though a stiff evening breeze will make it feel closer to the mid-20s. By early Monday, lows dive near 10°F, bringing widespread frost and patchy ice on untreated surfaces. Drivers along I-93, I-95, and Route 128 should watch for black ice during the morning commute.
Monday stays sunny but frigid, with highs struggling to reach 26°F despite bright skies. Winds gust up to 25 mph, creating a biting wind chill through the afternoon. The brief calm won’t last long — a southern storm system arrives late Tuesday, bringing clouds, a chance of light rain or snow, and a milder feel near 35°F.
By Wednesday, the system intensifies, pulling in moisture and warmer air that could trigger a rain–snow mix before turning to rain. Forecasters say another push of Arctic air will follow late week, marking the coldest stretch yet of the early December season.
Five-Day Outlook (Boston, MA)
- Monday: Sunny, high 26°F.
- Tuesday: Mostly sunny, high 35°F.
- Wednesday: Rain/snow mix, high 44°F.
- Thursday: Mostly sunny, high 40°F.
- Friday: Chance of snow, high 31°F.





