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.

Fair

41°F

5°C

Humidity 79%
Wind Speed W 9 mph
Barometer 29.77 in (1008.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 14 Mar 4:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Today

    Today: Mostly sunny, with a high near 46. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 39 mph.

    High: 46 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 30. Wind chill values between 25 and 30. West wind 7 to 15 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 44. North wind 5 to 11 mph becoming southeast in the afternoon.

    High: 44 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain likely after 2am. Mostly cloudy, with a temperature rising to around 44 by 5am. Southeast wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F⇑

    Mostly Cloudy
    then Rain
    Likely

  • Monday

    Monday: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 56 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 36. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: Rain likely before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 45. Chance of precipitation is 60%.

    High: 45 °F

    Rain Likely
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 46. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 39 mph.
Tonight
Mostly clear, with a low around 30. Wind chill values between 25 and 30. West wind 7 to 15 mph.
Sunday
Partly sunny, with a high near 44. North wind 5 to 11 mph becoming southeast in the afternoon.
Sunday Night
Rain likely after 2am. Mostly cloudy, with a temperature rising to around 44 by 5am. Southeast wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 36. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain likely before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 45. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
3:09 am EDT Mar 14, 2026
Forecast Valid:
5am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation