National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Storm Moving from Western into Central U.S. through Wednesday

A storm system moving over the Rockies Wednesday will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Moderate snow is expected from northwestern Wyoming into southern Montana. Read More >

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

51°F

11°C

Humidity 100%
Wind Speed N 6 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 15 Oct 5:56 am EDT
Extended Forecast for

Groton CT

  • Today

    Today: Mostly sunny, with a high near 63. North wind 7 to 15 mph.

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. North wind 15 to 17 mph.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. North wind 14 to 17 mph.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. North wind 15 to 18 mph.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60. North wind 13 to 15 mph.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 63. North wind 7 to 15 mph.
Tonight
Mostly clear, with a low around 44. North wind 15 to 17 mph.
Thursday
Sunny, with a high near 55. North wind 14 to 17 mph.
Thursday Night
Mostly clear, with a low around 45. North wind 15 to 18 mph.
Friday
Sunny, with a high near 60. North wind 13 to 15 mph.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Monday
Showers likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
1:35 am EDT Oct 15, 2025
Forecast Valid:
6am EDT Oct 15, 2025-6pm EDT Oct 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