Weather WorldSouth Waltham, MA 7-Day Weather Forecast
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South Waltham Weather Forecast
South Waltham, MA Weather Forecast Date: 1003 AM EDT Wed Aug 19 2026
Weather forecast for South Waltham, MA
Today Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
This Afternoon... Sunny. Highs in the mid 80s. Southwest winds 5 to 10 mph. |
Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Partly sunny with a 50% chance of showers. Highs in the mid 80s. West winds around 5 mph. |
| Fri Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Friday... Mostly sunny. Highs in the lower 80s. North winds 5 to 10 mph, becoming east in the afternoon. |
| Sat Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Saturday... Mostly cloudy with a 40% chance of showers. Highs in the upper 70s. Lows in the lower 60s. |
| Sun Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Sunday... Mostly cloudy with a 40% chance of showers. Highs in the upper 70s. Lows in the lower 60s. |
| Sun Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Sunday... Mostly cloudy with a 40% chance of showers. Highs in the upper 70s. Lows in the lower 60s. |
| Mon Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Monday... Mostly sunny. Highs in the lower 80s. |
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