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.

Overcast

62°F

17°C

Humidity 67%
Wind Speed SE 9 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Sep 7:56 am EDT
Extended Forecast for

3 Miles SW Ledyard CT

  • Today

    Today: Rain, mainly after 11am. High near 64. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain

  • Tonight

    Tonight: Periods of rain, mainly before 2am. Low around 58. Southeast wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Rain

  • Monday

    Monday: A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 66. Northeast wind 9 to 11 mph.

    High: 66 °F

    Chance Rain
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 52. Northeast wind 6 to 8 mph.

    Low: 52 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 63. Northeast wind around 11 mph, with gusts as high as 22 mph.

    High: 63 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Rain, mainly after 11am. High near 64. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Periods of rain, mainly before 2am. Low around 58. Southeast wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 66. Northeast wind 9 to 11 mph.
Monday Night
Mostly cloudy, with a low around 52. Northeast wind 6 to 8 mph.
Tuesday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 63. Northeast wind around 11 mph, with gusts as high as 22 mph.
Tuesday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 47.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 64.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 64. Breezy.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Ledyard CT
 41.42°N 72.03°W (Elev. 233 ft)
Last Update:
3:41 am EDT Sep 20, 2026
Forecast Valid:
8am EDT Sep 20, 2026-6pm EDT Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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