National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

36°F

2°C

Humidity 35%
Wind Speed NW 9 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Mar 9:56 am EDT
Extended Forecast for

New London CT

  • Today

    Today: Increasing clouds, with a high near 45. Southwest wind 8 to 11 mph.

    High: 45 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 11pm and 2am. Cloudy during the early evening, then gradual clearing, with a low around 35. South wind 13 to 17 mph.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Breezy, with a west wind 15 to 22 mph, with gusts as high as 33 mph.

    High: 47 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 29. Northwest wind 7 to 14 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 44. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 44 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 5am. Mostly cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Mostly Cloudy
    then Rain
    Likely

  • Monday

    Monday: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. Breezy. Chance of precipitation is 100%.

    High: 57 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Rain. Low around 40. Windy. Chance of precipitation is 90%.

    Low: 40 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain likely, mainly before 8am. Partly sunny, with a high near 48. Chance of precipitation is 60%.

    High: 48 °F

    Rain Likely
    then Chance
    Rain

Detailed Forecast

Today
Increasing clouds, with a high near 45. Southwest wind 8 to 11 mph.
Tonight
A 30 percent chance of rain, mainly between 11pm and 2am. Cloudy during the early evening, then gradual clearing, with a low around 35. South wind 13 to 17 mph.
Saturday
Mostly sunny, with a high near 47. Breezy, with a west wind 15 to 22 mph, with gusts as high as 33 mph.
Saturday Night
Increasing clouds, with a low around 29. Northwest wind 7 to 14 mph.
Sunday
Mostly cloudy, with a high near 44. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Sunday Night
Rain likely, mainly after 5am. Mostly cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. Breezy. Chance of precipitation is 100%.
Monday Night
Rain. Low around 40. Windy. Chance of precipitation is 90%.
Tuesday
Rain likely, mainly before 8am. Partly sunny, with a high near 48. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.37°N 72.11°W (Elev. 125 ft)
Last Update:
6:18 am EDT Mar 13, 2026
Forecast Valid:
10am EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation