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Groton Monument Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Sunny | Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 PM EDT Sun Oct 25 2026 
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Issued: 228 PM EDT Sun Oct 25 2026
Key Messages
1) Mainly dry conditions expected into early next week with gusty N-NE winds continuing through Friday.
Discussion
... .KEY MESSAGE 1... An anomalously strong upper ridge will translate east into Monday. At the same time, a strong upper low tracking across central and eastern Canada will suppress the upper ridge to the south. Upper ridging will then reestablish itself over the southeastern portion of the country, with the region lying between the ridge to the south and mainly zonal flo...