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

78°F

26°C

Humidity 79%
Wind Speed S 13 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Aug 12:56 pm EDT
Extended Forecast for

Groton CTSimilar City Names

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 77. South wind 11 to 13 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 70. South wind 6 to 9 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 76. South wind 3 to 7 mph.

    High: 76 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Light and variable wind becoming north 5 to 7 mph after midnight.

    Low: 66 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. North wind around 6 mph becoming light and variable in the morning.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 77. South wind 11 to 13 mph.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 70. South wind 6 to 9 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 76. South wind 3 to 7 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Light and variable wind becoming north 5 to 7 mph after midnight.
Saturday
Mostly sunny, with a high near 76. North wind around 6 mph becoming light and variable in the morning.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Partly sunny, with a high near 79.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 76.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CTSimilar City Names
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
1:01 pm EDT Aug 27, 2026
Forecast Valid:
1pm EDT Aug 27, 2026-6pm EDT Sep 2, 2026
 
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Additional Resources

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