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City of Somerville, MASomerville, MA Weather Forecast
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| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of Showers | Showers | Showers | Showers | Chance of Showers |
| Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Hi: 61°FHi: 16°C Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C Lo: 51°FLo: 11°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C |
| POP: 30% | POP: 50% | POP: 70% | POP: 70% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 102 AM EDT Tue Sep 22 2026 
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Issued: 238 AM EDT Tue Sep 22 2026
Key Messages
- Dry, cool, and breezy conditions continue through Thursday.
- Probabilities are increasing for a strong coastal low pressure system to bring impacts to southern New England in the form of rain, rough seas, strong winds, and coastal erosion late week into the weekend.
Discussion
...
KEY MESSAGE 1...Dry, cool, and breezy conditions continue through Thursday.
Over the next several days southern New England will see a persistence forecast without much change. Basically, cooler than average tem...