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.

Mostly Cloudy

42°F

6°C

Humidity 73%
Wind Speed SE 5 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 10 Jan 2:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • This Afternoon

    This Afternoon: Rain, mainly after 4pm. High near 43. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog after 4am. Low around 39. East wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: A chance of rain before 1pm, then a slight chance of snow showers after 4pm. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 43. West wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 43 °F

    Chance Rain
    and Patchy
    Fog then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. Wind chill values between 15 and 20. West wind 15 to 18 mph, with gusts as high as 33 mph.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 38. West wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Rain, mainly after 4pm. High near 43. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 4am. Patchy fog after 4am. Low around 39. East wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A chance of rain before 1pm, then a slight chance of snow showers after 4pm. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 43. West wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 27. Wind chill values between 15 and 20. West wind 15 to 18 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 38. West wind 11 to 16 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 37.
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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:
1:33 pm EST Jan 10, 2026
Forecast Valid:
3pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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Additional Resources

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Chance of Precipitation