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

67°F

19°C

Humidity 87%
Wind Speed NW 7 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 31 Aug 2:56 am EDT
Extended Forecast for

Mystic CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Light northwest wind.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Low around 63. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: Showers before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. High near 73. East wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers before 2am. Mostly cloudy, with a low around 60. East wind around 6 mph.

    Low: 60 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers, mainly after 2am. Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 79. Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely then
    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Light northwest wind.
Monday
Mostly sunny, with a high near 76. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Monday Night
A chance of showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Low around 63. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. High near 73. East wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A 50 percent chance of showers before 2am. Mostly cloudy, with a low around 60. East wind around 6 mph.
Wednesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers, mainly after 2am. Low around 64. Chance of precipitation is 80%.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 79. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Sunny, with a high near 72.
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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:
2:07 am EDT Aug 31, 2026
Forecast Valid:
3am EDT Aug 31, 2026-6pm EDT Sep 6, 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