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

66°F

19°C

Humidity 73%
Wind Speed S 7 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 4 Nov 1:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. Southwest wind around 11 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Southwest wind around 8 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 69. Southwest wind 8 to 14 mph.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, then rain and possibly a thunderstorm after 1am. Steady temperature around 63. Southwest wind 9 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 67. South wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 67 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 1am. Low around 55. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 68. Southwest wind around 11 mph.
Tonight
Increasing clouds, with a low around 57. Southwest wind around 8 mph.
Thursday
Partly sunny, with a high near 69. Southwest wind 8 to 14 mph.
Thursday Night
A chance of rain, then rain and possibly a thunderstorm after 1am. Steady temperature around 63. Southwest wind 9 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain and possibly a thunderstorm. High near 67. South wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Friday Night
Rain, mainly before 1am. Low around 55. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Partly sunny, with a high near 65.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 59.
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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:
1:23 pm EST Nov 4, 2026
Forecast Valid:
2pm EST Nov 4, 2026-6pm EST Nov 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation