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.

Partly Cloudy

74°F

23°C

Humidity 85%
Wind Speed S 7 mph
Barometer 30.21 in (1023.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 17 Sep 12:56 pm EDT
Extended Forecast for

Ledyard CTSimilar City Names

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 77. South wind around 8 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 65. South wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 79. North wind 6 to 9 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. North wind around 6 mph.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. North wind around 6 mph becoming calm in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 51.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 2am. Low around 52. Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 77. South wind around 8 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 65. South wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 79. North wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 50. North wind around 6 mph.
Saturday
Mostly sunny, with a high near 68. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Increasing clouds, with a low around 51.
Sunday
Showers. High near 66. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 2am. Low around 52. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ledyard CTSimilar City Names
 41.44°N 72°W (Elev. 200 ft)
Last Update:
11:11 am EDT Sep 17, 2026
Forecast Valid:
1pm EDT Sep 17, 2026-6pm EDT Sep 23, 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