Monday, April 7 — Cold and Damp with a Wintry Mix
Mostly cloudy skies with a chance of showers through early afternoon. Highs top out near 52°F with a light northwest breeze. Skies remain mostly cloudy overnight with a low near 37°F. A classic post-frontal spring day.
Rain and snow likely before 7 a.m., with a brief period of snow mixing in across the interior and possibly as far east as the I-95 corridor. Any snow changes back to rain by mid-morning and gradually tapers through the afternoon. Highs only manage the low 40s under overcast skies and a northerly breeze around 5–7 mph. No snow accumulation expected in Waltham. Overnight stays cloudy with a few showers possible before 3 a.m. Low near 35°F.
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Wednesday, March 18 – Dry, breezy, and colder
Colder air pours in behind the storm, making this one of the chilliest days of the week. Sunshine returns, but brisk winds keep temperatures from recovering much. A cold night follows under partly cloudy skies.
• High: 37°F | Low: 24°F | Wind: NW 12–20 mph, gusts 25–30 mph • Sky: Mostly sunny
Tuesday, March 17 – Heavy rain and strong winds early, then drying out
This is the most impactful part of the forecast period. Heavy rain and potentially a few convective downpours or even an isolated thunderstorm continue into Monday night and very early Tuesday, along with strong to potentially damaging wind gusts. Conditions improve quickly from west to east Tuesday morning, with drier air and some clearing arriving by afternoon.
• High: 51°F | Low: 33°F | Wind: SSW shifting W 20–30 mph, gusts 40–55 mph • Sky: Rain early, then becoming partly sunny • Precipitation: 90% early, ending west to east • Rainfall: Storm total 1” to 2”, localized 3” possible
Monday, March 16 – Rain develops, becoming heavy at times
A strong storm system approaches from the west, drawing deep moisture into southern New England. Showers become more numerous through the day, and some rain may turn heavy by afternoon into the evening. It also turns milder and increasingly breezy as the day goes on.
• High: 57°F | Low: 48°F | Wind: S 15–25 mph, gusts 30–40 mph • Sky: Cloudy • Precipitation: Rain developing, heavy at times late • Rainfall: 0.75” to 1.50” possible by late night