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

51°F

11°C

Humidity 92%
Wind Speed N 5 mph
Barometer 30.43 in (1030.4 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 11 Oct 7:56 am EDT
Extended Forecast for

Mystic CT

  • Today

    Today: Rain after 2pm. High near 63. Southeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Mostly Cloudy
    then Rain

  • Tonight

    Tonight: Rain, with thunderstorms also possible after 2am. Low around 54. East wind 9 to 11 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 54 °F

    Rain

  • Columbus Day

    Columbus Day: A slight chance of rain and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 69. North wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. Northeast wind 5 to 9 mph becoming south in the afternoon.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 62.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Rain after 2pm. High near 63. Southeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, with thunderstorms also possible after 2am. Low around 54. East wind 9 to 11 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Columbus Day
A slight chance of rain and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 69. North wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 51. Calm wind.
Tuesday
Partly sunny, with a high near 66. Northeast wind 5 to 9 mph becoming south in the afternoon.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a steady temperature around 62.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 45.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 64.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 59.
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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:
5:35 am EDT Oct 11, 2026
Forecast Valid:
8am EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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