National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

39°F

4°C

Humidity 60%
Wind Speed N 5 mph
Barometer 30.43 in (1030.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 12 Apr 3:56 am EDT
Extended Forecast for

Old Saybrook Center CT

Frost Advisory April 12, 04:37am until April 12, 09:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory April 12, 04:37am until April 12, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Today

    High: 52 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 20 percent chance of showers. Mostly cloudy, with a low around 43. South wind 7 to 9 mph.

    Low: 43 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 63. Southwest wind 13 to 16 mph.

    High: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 51. West wind 6 to 15 mph.

    Low: 51 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 52. Calm wind becoming south 5 to 9 mph in the morning.
Tonight
A 20 percent chance of showers. Mostly cloudy, with a low around 43. South wind 7 to 9 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 63. Southwest wind 13 to 16 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 51. West wind 6 to 15 mph.
Tuesday
Mostly sunny, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Partly sunny, with a high near 75.
Wednesday Night
A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 56.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 66.
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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:
4:15 am EDT Apr 12, 2026
Forecast Valid:
4am EDT Apr 12, 2026-6pm EDT Apr 18, 2026
 
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