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

60°F

16°C

Humidity 75%
Wind Speed SW 14 G 24 mph
Barometer 29.90 in (1012.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 7 Oct 10:56 pm EDT
Extended Forecast for

Old Mystic CT

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind around 8 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, then becoming sunny during the afternoon, with a high near 72. West wind around 11 mph, with gusts as high as 21 mph.

    High: 72 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. Northwest wind around 6 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. West wind 5 to 10 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. Light northwest wind.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers, mainly after 2pm. High near 68. Chance of precipitation is 80%.

    High: 68 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Southwest wind around 8 mph.
Thursday
Partly sunny, then becoming sunny during the afternoon, with a high near 72. West wind around 11 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 48. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 68. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 46. Light northwest wind.
Saturday
Sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Showers, mainly after 2pm. High near 68. Chance of precipitation is 80%.
Sunday Night
Showers. Low around 59. Chance of precipitation is 80%.
Columbus Day
Showers likely, mainly before 8am. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 66.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Mystic CT
 41.37°N 71.96°W (Elev. 43 ft)
Last Update:
2:28 pm EDT Oct 7, 2026
Forecast Valid:
11pm EDT Oct 7, 2026-6pm EDT Oct 14, 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