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

70°F

21°C

Humidity 68%
Wind Speed SW 9 mph
Barometer 30.15 in (1020.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 4 Oct 2:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, clear, with a low around 54. Southwest wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming south around 6 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Patchy Fog

  • Monday

    Monday: Sunny, with a high near 75. Southwest wind 3 to 8 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Southwest wind around 7 mph.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 75.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Showers, mainly after 2am. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers, mainly before 2pm. High near 69. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, clear, with a low around 54. Southwest wind around 6 mph becoming calm in the evening.
Sunday
Patchy fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 58. Calm wind.
Monday
Sunny, with a high near 75. Southwest wind 3 to 8 mph.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Southwest wind around 7 mph.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 75.
Tuesday Night
Showers, mainly after 2am. Low around 60. Chance of precipitation is 80%.
Wednesday
Showers, mainly before 2pm. High near 69. Chance of precipitation is 80%.
Wednesday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 47.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 69.
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Forecast Area
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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:
2:02 pm EDT Oct 4, 2025
Forecast Valid:
3pm EDT Oct 4, 2025-6pm EDT Oct 11, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation