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.

Fair

75°F

24°C

Humidity 45%
Wind Speed W 18 G 31 mph
Barometer 29.68 in (1004.9 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 11:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. West wind 13 to 15 mph, with gusts as high as 31 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. West wind 5 to 7 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 60. Light and variable wind.

    Low: 60 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 71. Light east wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 71 °F

    Showers
    Likely then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 76. West wind 13 to 15 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 60. West wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 76. Calm wind becoming southwest 5 to 8 mph in the morning.
Sunday Night
Increasing clouds, with a low around 60. Light and variable wind.
Monday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 71. Light east wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 62.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
2:19 am EDT Jun 20, 2026
Forecast Valid:
12pm EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation