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.

Overcast

70°F

21°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.81 in (1009.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 4 Sep 3:56 am EDT
Extended Forecast for

West Mystic CT

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 83 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Light north wind.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Isolated showers after 2pm. Increasing clouds, with a high near 76. North wind 5 to 7 mph becoming northeast in the afternoon. Chance of precipitation is 20%.

    High: 76 °F

    Sunny then
    Isolated
    Showers

  • Saturday Night

    Saturday Night: Scattered showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 55. Light northeast wind. Chance of precipitation is 30%.

    Low: 55 °F

    Scattered
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 66. Calm wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming northwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 60. Light north wind.
Saturday
Isolated showers after 2pm. Increasing clouds, with a high near 76. North wind 5 to 7 mph becoming northeast in the afternoon. Chance of precipitation is 20%.
Saturday Night
Scattered showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 55. Light northeast wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 54.
Labor Day
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 63.
Thursday
Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
West Mystic CT
 41.35°N 71.99°W (Elev. 98 ft)
Last Update:
2:33 am EDT Sep 4, 2026
Forecast Valid:
4am EDT Sep 4, 2026-6pm EDT Sep 10, 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