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

41°F

5°C

Humidity 67%
Wind Speed NE 5 mph
Barometer 30.28 in (1025.5 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 2 Nov 6:56 pm EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Light southwest wind.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers between 11am and 1pm, then rain likely after 1pm. Mostly cloudy, with a high near 60. South wind 6 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Slight Chance
    Showers then
    Rain Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers before 1am. Cloudy during the early evening, then gradual clearing, with a low around 46. Southwest wind 9 to 16 mph becoming northwest after midnight.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 60. Breezy, with a northwest wind 16 to 20 mph.

    High: 60 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. West wind 8 to 11 mph.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 54. Breezy.

    High: 54 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Light southwest wind.
Monday
A slight chance of showers between 11am and 1pm, then rain likely after 1pm. Mostly cloudy, with a high near 60. South wind 6 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 40 percent chance of showers before 1am. Cloudy during the early evening, then gradual clearing, with a low around 46. Southwest wind 9 to 16 mph becoming northwest after midnight.
Tuesday
Sunny, with a high near 60. Breezy, with a northwest wind 16 to 20 mph.
Tuesday Night
Mostly clear, with a low around 45. West wind 8 to 11 mph.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.
Thursday
Sunny, with a high near 54. Breezy.
Thursday Night
Mostly clear, with a low around 39.
Friday
Partly sunny, with a high near 58.
Friday Night
Showers likely. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
12:53 pm EST Nov 2, 2025
Forecast Valid:
7pm EST Nov 2, 2025-6pm EST Nov 9, 2025
 
Forecast Discussion
 
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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