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

70°F

21°C

Humidity 100%
Wind Speed SE 8 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 70°F (21°C)
Visibility 2.00 mi
Last update 13 Jul 10:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Partly sunny, with a high near 70. Southeast wind around 8 mph.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy drizzle and fog after 11pm. Increasing clouds, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. Calm wind becoming south around 6 mph in the afternoon.

    High: 75 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 3 to 6 mph.

    Low: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 8am. Partly sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 72 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 70. Southeast wind around 8 mph.
Tonight
Patchy drizzle and fog after 11pm. Increasing clouds, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 3 to 6 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Partly sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly cloudy, with a low around 72.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 78.
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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:
6:52 am EDT Jul 13, 2025
Forecast Valid:
11am 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