National Weather Service Forecast for: Groton CT
Issued by: National Weather Service New York, NY
Updated: 1:22 pm EST Feb 2, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 33. Wind chill values between 20 and 25. Northwest wind 11 to 13 mph.
Sunny
Tonight

Tonight: Clear, with a low around 9. Wind chill values between zero and 5. Northwest wind 6 to 8 mph.
Clear
Tuesday

Tuesday: Sunny, with a high near 35. Wind chill values between zero and 10. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 17. West wind 5 to 7 mph.
Partly Cloudy
Wednesday

Wednesday: Mostly sunny, with a high near 32. Northwest wind 6 to 11 mph.
Mostly Sunny
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 11.
Partly Cloudy
Thursday

Thursday: Mostly sunny, with a high near 28.
Mostly Sunny
Thursday
Night
Thursday Night: Mostly clear, with a low around 12.
Mostly Clear
Friday

Friday: Partly sunny, with a high near 29.
Partly Sunny
Hi 33 °F Lo 9 °F Hi 35 °F Lo 17 °F Hi 32 °F Lo 11 °F Hi 28 °F Lo 12 °F Hi 29 °F

 

This Afternoon
 
Sunny, with a high near 33. Wind chill values between 20 and 25. Northwest wind 11 to 13 mph.
Tonight
 
Clear, with a low around 9. Wind chill values between zero and 5. Northwest wind 6 to 8 mph.
Tuesday
 
Sunny, with a high near 35. Wind chill values between zero and 10. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tuesday Night
 
Partly cloudy, with a low around 17. West wind 5 to 7 mph.
Wednesday
 
Mostly sunny, with a high near 32. Northwest wind 6 to 11 mph.
Wednesday Night
 
Partly cloudy, with a low around 11.
Thursday
 
Mostly sunny, with a high near 28.
Thursday Night
 
Mostly clear, with a low around 12.
Friday
 
Partly sunny, with a high near 29.
Friday Night
 
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 10.
Saturday
 
Mostly sunny and cold, with a high near 16. Blustery.
Saturday Night
 
Partly cloudy, with a low around 6. Windy.
Sunday
 
Mostly sunny and cold, with a high near 18. Blustery.

 

Forecast from NOAA-NWS for Groton CT.