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 97%
Wind Speed N 6 mph
Barometer 30.23 in (1023.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 19 Aug 4:56 am EDT
Extended Forecast for

2 Miles SE Old Lyme CT

  • Today

    Today: Mostly sunny, with a high near 75. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. East wind around 6 mph.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 73. East wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 60. East wind around 10 mph.

    Low: 60 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 76. Northeast wind 13 to 16 mph, with gusts as high as 26 mph.

    High: 76 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. Northeast wind 6 to 8 mph becoming southeast in the afternoon.
Tonight
Partly cloudy, with a low around 62. East wind around 6 mph.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 73. East wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 60. East wind around 10 mph.
Thursday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 76. Northeast wind 13 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Old Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
4:58 am EDT Aug 19, 2025
Forecast Valid:
5am EDT Aug 19, 2025-6pm EDT Aug 25, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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