National Weather Service Forecast for: Groton CT
Issued by: National Weather Service New York, NY
Updated: 10:58 am EST Feb 2, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 31. Wind chill values between 15 and 20. Northwest wind 11 to 13 mph.
Sunny
Tonight

Tonight: Mostly clear, with a low around 11. Northwest wind 6 to 9 mph.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 32. Wind chill values between 5 and 15. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Sunny
Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 22. West wind 5 to 7 mph.
Mostly Cloudy
Wednesday

Wednesday: Mostly sunny, with a high near 32. Northwest wind 5 to 10 mph.
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 15.
Mostly Clear
Thursday

Thursday: Sunny, with a high near 28.
Sunny
Thursday
Night
Thursday Night: Mostly clear, with a low around 13.
Mostly Clear
Friday

Friday: Partly sunny, with a high near 30.
Partly Sunny
Hi 31 °F Lo 11 °F Hi 32 °F Lo 22 °F Hi 32 °F Lo 15 °F Hi 28 °F Lo 13 °F Hi 30 °F

 

This Afternoon
 
Sunny, with a high near 31. Wind chill values between 15 and 20. Northwest wind 11 to 13 mph.
Tonight
 
Mostly clear, with a low around 11. Northwest wind 6 to 9 mph.
Tuesday
 
Sunny, with a high near 32. Wind chill values between 5 and 15. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tuesday Night
 
Mostly cloudy, with a low around 22. West wind 5 to 7 mph.
Wednesday
 
Mostly sunny, with a high near 32. Northwest wind 5 to 10 mph.
Wednesday Night
 
Mostly clear, with a low around 15.
Thursday
 
Sunny, with a high near 28.
Thursday Night
 
Mostly clear, with a low around 13.
Friday
 
Partly sunny, with a high near 30.
Friday Night
 
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 11.
Saturday
 
Mostly sunny and cold, with a high near 16. Blustery.
Saturday Night
 
Mostly clear, with a low around 4. Blustery.
Sunday
 
Mostly sunny and cold, with a high near 17. Blustery.

 

Forecast from NOAA-NWS for Groton CT.