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.

Mostly Cloudy

42°F

6°C

Humidity 73%
Wind Speed SE 5 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 10 Jan 2:56 pm EST
Extended Forecast for

Old Saybrook Center CT

  • This Afternoon

    This Afternoon: Rain, mainly after 4pm. High near 43. East wind around 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog after 4am. Low around 40. East wind 6 to 13 mph becoming northwest after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: A chance of rain before 1pm, then a slight chance of showers after 4pm. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 42. West wind 6 to 14 mph. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Wind chill values between 15 and 25. Breezy, with a west wind 20 to 24 mph.

    Low: 30 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 39. Breezy, with a west wind 13 to 20 mph.

    High: 39 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 45.

    High: 45 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain, mainly after 4pm. High near 43. East wind around 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly before 4am. Patchy fog after 4am. Low around 40. East wind 6 to 13 mph becoming northwest after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A chance of rain before 1pm, then a slight chance of showers after 4pm. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 42. West wind 6 to 14 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 30. Wind chill values between 15 and 25. Breezy, with a west wind 20 to 24 mph.
Monday
Mostly sunny, with a high near 39. Breezy, with a west wind 13 to 20 mph.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Cloudy, with a high near 45.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 38.
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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:
1:33 pm EST Jan 10, 2026
Forecast Valid:
3pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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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