| National Weather Service Forecast for:
Groton CT Issued by: National Weather Service New York, NY |
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| Updated: 7:25 pm EST Dec 17, 2025 | ||||||||||||||||||
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Wind Advisory
Hazardous Weather Outlook
| Tonight |
Mostly clear, with a low around 28. West wind 9 to 14 mph becoming light northwest after midnight. |
| Thursday |
Sunny, with a high near 52. Light and variable wind becoming south 6 to 11 mph in the morning. |
| Thursday Night |
Rain, mainly after 1am. Temperature rising to around 53 by 1am. Windy, with a south wind 13 to 18 mph increasing to 23 to 28 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible. |
| Friday |
Rain before 10am, then rain and possibly a thunderstorm between 10am and 1pm, then rain likely after 1pm. Temperature rising to near 54 by 9am, then falling to around 47 during the remainder of the day. Windy, with a south wind 29 to 34 mph becoming west 22 to 27 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Friday Night |
Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Windy, with a west wind 26 to 31 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 43 mph. |
| Saturday |
Mostly sunny, with a high near 43. |
| Saturday Night |
Mostly cloudy, with a low around 36. |
| Sunday |
Partly sunny, with a high near 46. |
| Sunday Night |
Mostly clear, with a low around 26. |
| Monday |
Sunny, with a high near 34. |
| Monday Night |
Partly cloudy, with a low around 26. |
| Tuesday |
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%. |
| Tuesday Night |
A 30 percent chance of rain. Mostly cloudy, with a low around 34. |
| Wednesday |
Mostly sunny, with a high near 41. |
Forecast from NOAA-NWS for Groton CT.
