National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

A Few Clouds

72°F

22°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 8 Aug 4:56 am EDT
Extended Forecast for

2 Miles SSE Ledyard CT

Heat Advisory August 8, 11:00am until August 8, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 72. West wind 3 to 6 mph.

    Low: 72 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Light west wind becoming southwest 5 to 9 mph in the morning.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. Light northwest wind.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning.
Tonight
A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 72. West wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 88. Light west wind becoming southwest 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 66. Light northwest wind.
Monday
Sunny, with a high near 85. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 87.
Tuesday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 65.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Ledyard CT
 41.42°N 71.98°W (Elev. 269 ft)
Last Update:
2:28 am EDT Aug 8, 2026
Forecast Valid:
5am EDT Aug 8, 2026-6pm EDT Aug 14, 2026
 
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