National Weather Service

News Headlines

Climate Reports Summary for 2025

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Overcast

44°F

7°C

Humidity	93%
Wind Speed	SE 12 mph
Barometer	30.12 in (1020.0 mb)
Dewpoint	42°F (6°C)
Visibility	10.00 mi
Wind Chill	38°F (3°C)
Last update	9 Jan 4:56 pm EST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Groton / New London Airport CT

Tonight
Low: 36 °F
Showers
Likely then
Mostly Cloudy
Saturday
High: 44 °F
Partly Sunny
then Rain
Saturday Night
Low: 36 °F
Rain
Sunday
High: 44 °F
Chance Rain
Sunday Night
Low: 26 °F
Partly Cloudy
Monday
High: 38 °F
Sunny
Monday Night
Low: 29 °F
Partly Cloudy
Tuesday
High: 42 °F
Sunny
Tuesday Night
Low: 34 °F
Mostly Cloudy

Detailed Forecast

Tonight

Showers likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 36. South wind 8 to 14 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday

Rain, mainly after 4pm. High near 44. Northwest wind around 7 mph becoming east in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night

Rain. Low around 36. East wind 6 to 9 mph becoming north after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

A 40 percent chance of rain, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 8 to 17 mph.

Sunday Night

Partly cloudy, with a low around 26. West wind around 18 mph, with gusts as high as 32 mph.

Monday

Sunny, with a high near 38.

Monday Night

Partly cloudy, with a low around 29.

Tuesday

Sunny, with a high near 42.

Tuesday Night

Mostly cloudy, with a low around 34.