Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fog/Mist

75°F

24°C

Humidity 90%
Wind Speed SW 10 mph
Barometer 29.75 in (1007.5 mb)
Dewpoint 72°F (22°C)
Visibility 5.00 mi
Last update 3 Aug 4:56 pm EDT
Extended Forecast for

Groton CT

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 75. Southwest wind around 16 mph.  Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 11pm.  Patchy fog after 4am.  Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 64. West wind 6 to 11 mph becoming northwest after midnight.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely then
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. Southwest wind 3 to 6 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Southwest wind around 16 mph. Chance of precipitation is 60%.
Tonight
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 11pm. Patchy fog after 4am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 64. West wind 6 to 11 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 76. Southwest wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72.
Friday
Sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 72.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 81.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 71.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.09°W (Elev. 3 ft)
4:32 pm EDT Aug 3, 2026
5pm EDT Aug 3, 2026-6pm EDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database