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

48°F

9°C

Humidity 66%
Wind Speed NW 8 mph
Barometer 29.84 in (1010.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 13 Apr 10:56 pm EDT
Extended Forecast for

Old Mystic CT

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind around 8 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63. Northwest wind 8 to 10 mph becoming west in the afternoon.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Showers likely, mainly after 2am. Increasing clouds, with a low around 45. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 61. Southwest wind 5 to 11 mph. Chance of precipitation is 60%.

    High: 61 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. West wind around 11 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Northwest wind around 8 mph.
Monday
Sunny, with a high near 63. Northwest wind 8 to 10 mph becoming west in the afternoon.
Monday Night
Showers likely, mainly after 2am. Increasing clouds, with a low around 45. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 61. Southwest wind 5 to 11 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 40. West wind around 11 mph.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 36.
Friday
Mostly sunny, with a high near 59.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Mystic CT
 41.37°N 71.99°W (Elev. 131 ft)
Last Update:
11:16 pm EDT Apr 13, 2025
Forecast Valid:
11pm EDT Apr 13, 2025-6pm EDT Apr 20, 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