National Weather Service Forecast for: New London CT
Issued by: National Weather Service New York, NY
Updated: 1:17 am EST Dec 18, 2025
 
Overnight

Overnight: Mostly clear, with a low around 25. Light and variable wind.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 51. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunny

 Thursday
Night
Thursday Night: Showers, mainly after 1am. Temperature rising to around 52 by 5am. South wind 6 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Slight Chance
Showers then
Showers
 Friday

Friday: Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers likely after 1pm. Temperature rising to near 56 by 10am, then falling to around 48 during the remainder of the day. Windy, with a south wind 17 to 26 mph becoming west in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Windy
 Friday
Night
Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 26. West wind 11 to 17 mph, with gusts as high as 43 mph.
Decreasing
Clouds
 Saturday

Saturday: Mostly sunny, with a high near 42.
Mostly Sunny

 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 33.
Mostly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 46.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 22.
Mostly Clear
Lo 25 °F Hi 51 °F Lo 43 °F⇑ Hi 56 °F⇓ Lo 26 °F Hi 42 °F Lo 33 °F Hi 46 °F Lo 22 °F

Wind Advisory
Hazardous Weather Outlook
 

Overnight
 
 Mostly clear, with a low around 25. Light and variable wind.
Thursday
 
 Sunny, with a high near 51. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
 
 Showers, mainly after 1am. Temperature rising to around 52 by 5am. South wind 6 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers likely after 1pm. Temperature rising to near 56 by 10am, then falling to around 48 during the remainder of the day. Windy, with a south wind 17 to 26 mph becoming west in the afternoon. Winds could gust as high as 47 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 26. West wind 11 to 17 mph, with gusts as high as 43 mph.
Saturday
 
 Mostly sunny, with a high near 42.
Saturday Night
 
 Mostly cloudy, with a low around 33.
Sunday
 
 Mostly sunny, with a high near 46.
Sunday Night
 
 Mostly clear, with a low around 22.
Monday
 
 Sunny, with a high near 33.
Monday Night
 
 Partly cloudy, with a low around 21.
Tuesday
 
 A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 50%.
Tuesday Night
 
 Mostly cloudy, with a low around 30.
Wednesday
 
 Mostly sunny, with a high near 42.

 

Forecast from NOAA-NWS for New London CT.