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

79°F

26°C

Humidity 50%
Wind Speed N 8 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jul 6:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light north wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the morning.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 70. South wind 6 to 8 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 7 to 10 mph.

    High: 80 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 65. North wind around 6 mph.

    Low: 65 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Light north wind.
Saturday
Sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 70. South wind 6 to 8 mph. Chance of precipitation is 40%.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 7 to 10 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 65. North wind around 6 mph.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 70.
Friday
Partly sunny, with a high near 83.
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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:
1:40 pm EDT Jul 18, 2025
Forecast Valid:
7pm EDT Jul 18, 2025-6pm EDT Jul 25, 2025
 
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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