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.

Mostly Cloudy

63°F

17°C

Humidity 87%
Wind Speed SW 9 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 May 2:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 77. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57. Southwest wind around 7 mph.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 82. Southwest wind 6 to 11 mph.

    High: 82 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 60. Southwest wind 5 to 7 mph becoming north after midnight.

    Low: 60 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 56. Southwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 77. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 57. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 82. Southwest wind 6 to 11 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 60. Southwest wind 5 to 7 mph becoming north after midnight.
Thursday
A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 76.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 70.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 51.
Saturday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 73.
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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:
3:13 pm EDT May 25, 2026
Forecast Valid:
3pm EDT May 25, 2026-6pm EDT Jun 1, 2026
 
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