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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed NE 7 mph
Barometer 30.37 in (1028.5 mb)
Dewpoint 38°F (3°C)
Visibility 4.00 mi
Wind Chill34°F (1°C)
Last update 3 Apr 4:56 am EDT
Extended Forecast for

2 Miles N South Lyme CT

  • Today

    Today: A 20 percent chance of showers before 8am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 58 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 50. Southwest wind 3 to 6 mph.

    Low: 50 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 41. East wind 6 to 8 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 60. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow showers before 2pm, then a chance of rain showers. Partly sunny, with a high near 50. Chance of precipitation is 30%.

    High: 50 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
A 20 percent chance of showers before 8am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 50. Southwest wind 3 to 6 mph.
Saturday
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 41. East wind 6 to 8 mph, with gusts as high as 22 mph.
Sunday
Showers. High near 60. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
A chance of rain and snow showers before 2pm, then a chance of rain showers. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 29.
Wednesday
Sunny, with a high near 49.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N South Lyme CT
 41.35°N 72.29°W (Elev. 98 ft)
Last Update:
2:20 am EDT Apr 3, 2026
Forecast Valid:
6am EDT Apr 3, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation