National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Light Rain

35°F

2°C

Humidity 89%
Wind Speed NE 16 mph
Barometer 29.77 in (1008.2 mb)
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Wind Chill25°F (-4°C)
Last update 20 Feb 12:56 pm EST
Extended Forecast for

3 Miles SE Old Lyme CT

  • This Afternoon

    This Afternoon: Rain. High near 38. East wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 38 °F

    Rain

  • Tonight

    Tonight: Rain likely, possibly mixing with snow after 1am, then gradually ending. Mostly cloudy, with a low around 31. East wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain Likely
    then Slight
    Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 41. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 28. Wind chill values between 20 and 25. Northeast wind around 6 mph.

    Low: 28 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. East wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 37 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 29. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A 40 percent chance of snow before 1pm. Cloudy, with a high near 35. Breezy.

    High: 35 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain. High near 38. East wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain likely, possibly mixing with snow after 1am, then gradually ending. Mostly cloudy, with a low around 31. East wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
Mostly cloudy, with a high near 41. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 28. Wind chill values between 20 and 25. Northeast wind around 6 mph.
Sunday
A 40 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. East wind 9 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Snow likely. Cloudy, with a low around 29. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Monday
A 40 percent chance of snow before 1pm. Cloudy, with a high near 35. Breezy.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Old Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
1:01 am EST Feb 20, 2026
Forecast Valid:
1pm EST Feb 20, 2026-6pm EST Feb 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation