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

59°F

15°C

Humidity 90%
Wind Speed N 13 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 21 Sep 8:56 am EDT
Extended Forecast for

Groton CTSimilar City Names

  • Today

    Today: Partly sunny, with a high near 69. Northeast wind 15 to 17 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East wind 10 to 14 mph.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 65. Northeast wind around 18 mph.

    High: 65 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 54. Northeast wind around 17 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 33 mph.

    High: 63 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. Breezy.

    Low: 54 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 63. Breezy.

    High: 63 °F

    Mostly Cloudy
    and Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 63. Breezy.

    High: 63 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Partly sunny, with a high near 69. Northeast wind 15 to 17 mph.
Tonight
Mostly cloudy, with a low around 55. East wind 10 to 14 mph.
Tuesday
A 20 percent chance of rain before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 65. Northeast wind around 18 mph.
Tuesday Night
Increasing clouds, with a low around 54. Northeast wind around 17 mph.
Wednesday
Partly sunny, with a high near 63. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly cloudy, with a low around 54. Breezy.
Thursday
Mostly cloudy, with a high near 63. Breezy.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 51.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 63. Breezy.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 65. Breezy. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CTSimilar City Names
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
3:38 am EDT Sep 21, 2026
Forecast Valid:
9am EDT Sep 21, 2026-6pm EDT Sep 27, 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