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

72°F

22°C

Humidity 100%
Wind Speed S 10 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 14 Jul 7:56 pm EDT
Extended Forecast for

New London CT

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a steady temperature around 74. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 74 °F

    Chance
    T-storms then
    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly before 11am. Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 80 °F

    Chance
    T-storms and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 71. Light southwest wind.

    Low: 71 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 88. Calm wind becoming south 5 to 8 mph in the morning.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. Southwest wind 3 to 6 mph.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a steady temperature around 74. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly before 11am. Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 71. Light southwest wind.
Wednesday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 88. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. Southwest wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.35°N 72.11°W (Elev. 98 ft)
Last Update:
2:29 pm EDT Jul 14, 2025
Forecast Valid:
8pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025
 
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