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

Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

A Few Clouds

56°F

13°C

Humidity 32%
Wind Speed NW 14 G 25 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 4 Nov 3:56 pm EST
Extended Forecast for

Old Lyme CT

High Wind Watch November 5, 09:00pm until November 6, 08:00am
Click here for hazard details and duration
High Wind Watch

  • Tonight

    Tonight: Mostly clear, with a low around 40. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 62. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 62 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain and thunderstorms before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 44. Windy, with a southwest wind 21 to 31 mph becoming northwest after midnight. Winds could gust as high as 60 mph.

    Low: 44 °F

    Chance Rain
    and Windy

  • Thursday

    Thursday: Sunny, with a high near 52. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 55 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 32. Northwest wind 5 to 10 mph becoming light after midnight.

    Low: 32 °F

    Frost

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 50. Chance of precipitation is 60%.

    Low: 50 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: A 50 percent chance of rain before 1pm. Partly sunny, with a high near 63.

    High: 63 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 40. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.
Wednesday
Increasing clouds, with a high near 62. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Wednesday Night
A 30 percent chance of rain and thunderstorms before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 44. Windy, with a southwest wind 21 to 31 mph becoming northwest after midnight. Winds could gust as high as 60 mph.
Thursday
Sunny, with a high near 52. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 55 mph.
Thursday Night
Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 32. Northwest wind 5 to 10 mph becoming light after midnight.
Friday
Partly sunny, with a high near 60.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 50. Chance of precipitation is 60%.
Saturday
A 50 percent chance of rain before 1pm. Partly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
A 50 percent chance of rain after 1pm. Partly sunny, with a high near 59.
Sunday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 30.
Veterans Day
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Lyme CT
 41.31°N 72.33°W (Elev. 43 ft)
Last Update:
3:13 pm EST Nov 4, 2025
Forecast Valid:
4pm EST Nov 4, 2025-6pm EST Nov 11, 2025
 
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Additional Resources

Radar & Satellite Image

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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