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

70°F

21°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 30.11 in (1019.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 13 Jul 9:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Patchy drizzle after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Monday

    Monday: Patchy drizzle before 8am, then a slight chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning.

    High: 79 °F

    Patchy
    Drizzle then
    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 71. Southwest wind 3 to 6 mph.

    Low: 71 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 2pm, then a slight chance of showers. Mostly cloudy, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening.

    Low: 71 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 73.

    Low: 73 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy drizzle after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Monday
Patchy drizzle before 8am, then a slight chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 71. Southwest wind 3 to 6 mph.
Tuesday
A chance of showers and thunderstorms before 2pm, then a slight chance of showers. Mostly cloudy, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
Mostly cloudy, with a low around 72.
Thursday
Partly sunny, with a high near 84.
Thursday Night
Mostly cloudy, with a low around 73.
Friday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 86.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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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:
5:47 pm EDT Jul 13, 2025
Forecast Valid:
11pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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Additional Resources

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Chance of Precipitation