Weather WorldSouth Waltham, MA 7-Day Night Weather Forecast
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South Waltham, MA Weather Forecast
South Waltham, MA Weather Forecast Date: 403 PM EDT Tue Aug 04 2026
The area/counties/county of: Southeast Middlesex County Ma, including the city of Cambridge.or toggle through each period.
Tonight... Partly cloudy. Lows in the lower 60s. Southwest winds around 5 mph.
Wednesday... Partly sunny. Highs in the upper 80s. Southwest winds around 5 mph.
Wednesday Night... Partly cloudy. Humid with lows in the upper 60s. Southwest winds around 5 mph.
Thursday... Partly sunny with a chance of showers and thunderstorms. Hot with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 30%.
Thursday Night... Partly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 30%.
Friday... Sunny with a chance of showers. Hot with highs in the lower 90s. Chance of rain 40%.
Friday Night... Partly cloudy with a chance of showers. Lows in the lower 70s. Chance of rain 30%.
Saturday... Partly sunny with a chance of showers and thunderstorms. Hot with highs around 90. Chance of rain 40%.
Saturday Night... Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 30%.
Sunday... Mostly clear. Hot. Highs around 90. Lows around 70.
Sunday Night... Mostly clear. Hot. Highs around 90. Lows around 70.
Monday... Partly cloudy. Hot. Highs around 90. Lows in the upper 60s.
Monday Night... Partly cloudy. Hot. Highs around 90. Lows in the upper 60s.
POP = Probability of Precipitation
South Waltham Radar Loop
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