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

76°F

24°C

Humidity 82%
Wind Speed SW 15 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 10 Sep 12:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. West wind around 13 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Northwest wind around 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 75. West wind around 8 mph.

    High: 75 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 72. Light and variable wind becoming southeast 5 to 9 mph in the morning.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly between 8am and 2pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. West wind around 13 mph.
Tonight
Partly cloudy, with a low around 63. Northwest wind around 6 mph.
Friday
Partly sunny, then gradually becoming sunny, with a high near 75. West wind around 8 mph.
Friday Night
Clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 72. Light and variable wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 61.
Sunday
Showers likely, mainly between 8am and 2pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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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:
11:04 am EDT Sep 10, 2026
Forecast Valid:
1pm EDT Sep 10, 2026-6pm EDT Sep 16, 2026
 
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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