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

63°F

17°C

Humidity 97%
Wind Speed Calm
Barometer 30.03 in (1016.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 18 Jul 1:56 am EDT
Extended Forecast for

Mystic CT

  • Overnight

    Overnight: Patchy smoke. Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Patchy Smoke

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly after 2pm. Areas of smoke. High near 78. South wind 6 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 78 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Steady temperature around 71. South wind 8 to 10 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 82. Northwest wind 8 to 10 mph.

    High: 82 °F

    Sunny

  • Sunday Night

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

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76.

    High: 76 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 67. Chance of precipitation is 90%.

    Low: 67 °F

    Showers

Detailed Forecast

Overnight
Patchy smoke. Partly cloudy, with a low around 65. Calm wind.
Saturday
Showers and possibly a thunderstorm, mainly after 2pm. Areas of smoke. High near 78. South wind 6 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Steady temperature around 71. South wind 8 to 10 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Sunny, with a high near 82. Northwest wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 60. Light north wind.
Monday
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 67. Chance of precipitation is 90%.
Wednesday
Showers likely, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mystic CT
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
2:29 am EDT Jul 18, 2026
Forecast Valid:
2am EDT Jul 18, 2026-6pm EDT Jul 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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