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

62°F

17°C

Humidity 58%
Wind Speed E 13 mph
Barometer 30.29 in (1025.5 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 21 Sep 3:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Partly cloudy, with a low around 48. East wind 5 to 8 mph becoming calm in the evening.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 69. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Southwest wind 3 to 5 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 6 to 11 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 3 to 8 mph. Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. East wind 5 to 8 mph becoming calm in the evening.
Monday
Sunny, with a high near 69. Light and variable wind becoming south 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 57. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 6 to 11 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 3 to 8 mph. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 68.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 72.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 60.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 72.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 59.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 71.
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Forecast Area
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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:
1:55 pm EDT Sep 21, 2025
Forecast Valid:
4pm EDT Sep 21, 2025-6pm EDT Sep 28, 2025
 
Forecast Discussion
 
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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