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

57°F

14°C

Humidity 69%
Wind Speed S 9 mph
Barometer 30.17 in (1021.7 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 15 Oct 10:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 54 by 5am. Southeast wind 3 to 6 mph.

    Low: 50 °F⇑

    Mostly Cloudy

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 69. South wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms before 5am, then showers likely. Low around 43. Southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. North wind around 7 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 54 by 5am. Southeast wind 3 to 6 mph.
Friday
Showers, with thunderstorms also possible after 2pm. High near 69. South wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms before 5am, then showers likely. Low around 43. Southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 34. North wind around 7 mph.
Sunday
Sunny, with a high near 56.
Sunday Night
Clear, with a low around 41.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
2:36 pm EDT Oct 15, 2026
Forecast Valid:
11pm EDT Oct 15, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation