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

54°F

12°C

Humidity 72%
Wind Speed S 6 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 26 Mar 2:56 pm EDT
Extended Forecast for

3 Miles SE Old Lyme CT

  • Tonight

    Tonight: Showers, mainly after 8pm. Steady temperature around 49. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 48. North wind 9 to 11 mph. Chance of precipitation is 60%.

    High: 48 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. North wind around 7 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 39. Wind chill values between 20 and 30. North wind 9 to 14 mph.

    High: 39 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Northwest wind 3 to 8 mph.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers, mainly after 8pm. Steady temperature around 49. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 48. North wind 9 to 11 mph. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 30. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 39. Wind chill values between 20 and 30. North wind 9 to 14 mph.
Saturday Night
Mostly clear, with a low around 28. Northwest wind 3 to 8 mph.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 30 percent chance of rain after 8am. Mostly cloudy, with a high near 54.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 57.
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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:
2:38 pm EDT Mar 26, 2026
Forecast Valid:
3pm EDT Mar 26, 2026-6pm EDT Apr 2, 2026
 
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Additional Resources

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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