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 48%
Wind Speed N 8 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 17 Oct 2:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. North wind 5 to 7 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 63. North wind around 5 mph becoming light and variable.

    High: 63 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 66. South wind 6 to 14 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. South wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.

    High: 65 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. North wind 5 to 7 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 63. North wind around 5 mph becoming light and variable.
Saturday Night
Mostly clear, with a low around 48. Calm wind.
Sunday
Mostly sunny, with a high near 66. South wind 6 to 14 mph.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. South wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.
Monday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 65.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 45.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
2:05 pm EDT Oct 17, 2025
Forecast Valid:
3pm EDT Oct 17, 2025-6pm EDT Oct 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation