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

75°F

24°C

Humidity 71%
Wind Speed SW 13 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Oct 11:56 am EDT
Extended Forecast for

Groton CTSimilar City Names

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind around 11 mph.

    High: 74 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 8 to 11 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63. North wind 5 to 10 mph.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 2am. Increasing clouds, with a low around 53. Light southeast wind increasing to 5 to 10 mph after midnight. Chance of precipitation is 60%.

    Low: 53 °F

    Mostly Clear
    then Showers
    Likely

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 68. Southwest wind 15 to 17 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 2am. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 51. Breezy.

    High: 51 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind around 11 mph.
Tonight
Mostly clear, with a low around 54. Northwest wind 8 to 11 mph.
Thursday
Sunny, with a high near 63. North wind 5 to 10 mph.
Thursday Night
Showers likely after 2am. Increasing clouds, with a low around 53. Light southeast wind increasing to 5 to 10 mph after midnight. Chance of precipitation is 60%.
Friday
Showers, with thunderstorms also possible after 5pm. High near 68. Southwest wind 15 to 17 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely before 2am. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 51. Breezy.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 65.
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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:
10:46 am EDT Oct 14, 2026
Forecast Valid:
12pm EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
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Additional Resources

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Chance of Precipitation