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

50°F

10°C

Humidity 77%
Wind Speed S 7 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 10 Mar 1:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 59. South wind around 7 mph.

    High: 59 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Southwest wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. East wind 5 to 10 mph.

    High: 52 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 48. Southwest wind 13 to 15 mph.

    Low: 48 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely before 5pm, then a chance of rain and snow. Mostly cloudy, with a temperature falling to around 42 by 5pm. Northwest wind 15 to 17 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 54 °F⇓

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of snow before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 31.

    Low: 31 °F

    Chance Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 43.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 59. South wind around 7 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. East wind 5 to 10 mph.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 48. Southwest wind 13 to 15 mph.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Mostly cloudy, with a temperature falling to around 42 by 5pm. Northwest wind 15 to 17 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A 30 percent chance of snow before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 31.
Friday
Increasing clouds, with a high near 43.
Friday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 38.
Saturday
Sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Rain. Low around 43. Breezy. Chance of precipitation is 80%.
Monday
Rain. High near 51. Breezy. Chance of precipitation is 90%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
1:57 pm EDT Mar 10, 2026
Forecast Valid:
2pm EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation