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.

Mostly Cloudy

60°F

16°C

Humidity 56%
Wind Speed E 10 mph
Barometer 30.34 in (1027.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 11 Oct 11:56 am EDT
Extended Forecast for

Mystic CT

  • This Afternoon

    This Afternoon: Rain, mainly after 2pm. High near 63. Southeast wind 10 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    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

This Afternoon
Rain, mainly after 2pm. High near 63. Southeast wind 10 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half 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:
11:12 am EDT Oct 11, 2026
Forecast Valid:
12pm EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
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