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.

Fair

63°F

17°C

Humidity 56%
Wind Speed NE 13 G 22 mph
Barometer 30.19 in (1022.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 8 Jun 7:56 am EDT
Extended Forecast for

Groton CTSimilar City Names

  • Today

    Today: Sunny, with a high near 71. North wind 8 to 10 mph becoming southeast in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind 6 to 9 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Southwest wind 9 to 14 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Southwest wind 8 to 13 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 72. South wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 72 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 71. North wind 8 to 10 mph becoming southeast in the afternoon.
Tonight
Mostly clear, with a low around 57. West wind 6 to 9 mph.
Tuesday
Sunny, with a high near 73. Southwest wind 9 to 14 mph.
Tuesday Night
Mostly clear, with a low around 60. Southwest wind 8 to 13 mph.
Wednesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 72. South wind 8 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CTSimilar City Names
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
3:54 am EDT Jun 8, 2026
Forecast Valid:
8am EDT Jun 8, 2026-6pm EDT Jun 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation