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.

Overcast

68°F

20°C

Humidity 96%
Wind Speed E 8 mph
Barometer 29.95 in (1014.0 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 22 Aug 11:56 pm EDT
Extended Forecast for

New London CT

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog. Otherwise, mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind 5 to 8 mph becoming south in the afternoon.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Southwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

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

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog. Otherwise, mostly cloudy, with a low around 63. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind 5 to 8 mph becoming south in the afternoon.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 58. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.37°N 72.11°W (Elev. 125 ft)
Last Update:
10:43 pm EDT Aug 22, 2026
Forecast Valid:
12am EDT Aug 23, 2026-6pm EDT Aug 29, 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