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.

Light Rain Fog/Mist

55°F

13°C

Humidity 93%
Wind Speed NE 18 G 32 mph
Barometer 29.83 in (1010.1 mb)
Dewpoint 53°F (12°C)
Visibility 2.50 mi
Wind Chill50°F (10°C)
Last update 11 Oct 10:56 pm EDT
Extended Forecast for

3 Miles SW Groton CT

  • Tonight

    Tonight: Rain, mainly before 2am. Low around 54. Northeast wind 13 to 16 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Rain

  • Columbus Day

    Columbus Day: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. North wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 71 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Light and variable wind.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 67. East wind 6 to 9 mph becoming south in the afternoon.

    High: 67 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 61. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain, mainly before 2am. Low around 54. Northeast wind 13 to 16 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. North wind 6 to 11 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 54. Light and variable wind.
Tuesday
Partly sunny, with a high near 67. East wind 6 to 9 mph becoming south in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 61. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Showers likely after 8am. Partly sunny, with a high near 65. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 48. Breezy. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 56. Breezy.
Saturday Night
Partly cloudy, with a low around 38. Breezy.
Sunday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Groton CT
 41.3°N 72.12°W (Elev. 23 ft)
Last Update:
3:33 pm EDT Oct 11, 2026
Forecast Valid:
11pm EDT Oct 11, 2026-6pm EDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation