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

41°F

5°C

Humidity 93%
Wind Speed W 8 mph
Barometer 29.77 in (1008.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 11 Jan 5:56 am EST
Extended Forecast for

3 Miles SE Old Lyme CT

  • Today

    Today: A chance of rain before 1pm, then a slight chance of snow showers after 4pm. Patchy fog before 7am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 45. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 45 °F

    Chance Rain
    and Patchy
    Fog then
    Slight Chance
    Rain/Snow

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly between 7pm and 10pm. Partly cloudy, with a low around 28. Wind chill values between 15 and 20. Breezy, with a west wind 16 to 22 mph, with gusts as high as 36 mph.

    Low: 28 °F

    Breezy.
    Chance Snow
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 39. Wind chill values between 15 and 25. West wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 39 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. Southwest wind 8 to 10 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 43. Southwest wind 7 to 9 mph.

    High: 43 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 46.

    High: 46 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 1am. Cloudy, with a low around 32.

    Low: 32 °F

    Cloudy then
    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain. Partly sunny, with a high near 39.

    High: 39 °F

    Chance Rain

Detailed Forecast

Today
A chance of rain before 1pm, then a slight chance of snow showers after 4pm. Patchy fog before 7am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 45. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Tonight
A 30 percent chance of snow showers, mainly between 7pm and 10pm. Partly cloudy, with a low around 28. Wind chill values between 15 and 20. Breezy, with a west wind 16 to 22 mph, with gusts as high as 36 mph.
Monday
Sunny, with a high near 39. Wind chill values between 15 and 25. West wind 11 to 16 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 31. Southwest wind 8 to 10 mph.
Tuesday
Increasing clouds, with a high near 43. Southwest wind 7 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain after 1am. Cloudy, with a low around 32.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 39.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Old Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
1:40 am EST Jan 11, 2026
Forecast Valid:
6am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation