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

33°F

1°C

Humidity 85%
Wind Speed W 6 mph
Barometer 30.36 in (1028.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 25 Mar 5:56 am EDT
Extended Forecast for

Groton / New London Airport CT

  • Today

    Today: Partly sunny, with a high near 47. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. South wind around 8 mph.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 54. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 54 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 45. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 48. North wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 47. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 38. South wind around 8 mph.
Thursday
Mostly cloudy, with a high near 54. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Rain, mainly after 2am. Low around 45. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 8am. High near 48. North wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 50.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.34°N 72.05°W (Elev. 49 ft)
Last Update:
2:27 am EDT Mar 25, 2026
Forecast Valid:
6am EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation