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.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 68°F (20°C)
Visibility 2.00 mi
Last update 12 Jul 9:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 73. Southeast wind 3 to 8 mph.

    High: 73 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.

    Low: 68 °F

    Increasing
    Clouds

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. Calm wind becoming south 5 to 7 mph in the morning.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. Light east wind.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 73. Southeast wind 3 to 8 mph.
Sunday Night
Increasing clouds, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 72.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 77.
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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:
6:14 pm EDT Jul 12, 2025
Forecast Valid:
12am EDT Jul 13, 2025-6pm EDT Jul 19, 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