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.

Fair

47°F

8°C

Humidity 74%
Wind Speed S 7 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 9 Mar 10:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Sunny, with a high near 59. Southwest wind 5 to 7 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 58. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 41. South wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm. Cloudy, with a high near 52. Southeast wind 6 to 11 mph.

    High: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.

    High: 52 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Partly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 59. Southwest wind 5 to 7 mph.
Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 38. Light and variable wind.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 58. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41. South wind around 6 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers after 2pm. Cloudy, with a high near 52. Southeast wind 6 to 11 mph.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 48.
Thursday
Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow before 8pm. Partly cloudy, with a low around 31. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 42.
Friday Night
A chance of rain after 8pm, mixing with snow after 2am. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Saturday
A 30 percent chance of snow. Mostly sunny, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
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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:
11:18 am EDT Mar 9, 2026
Forecast Valid:
11am EDT Mar 9, 2026-6pm EDT Mar 15, 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