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

41°F

5°C

Humidity 93%
Wind Speed Calm
Barometer 30.01 in (1016.3 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Mar 9:56 pm EDT
Extended Forecast for

Mystic CT

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 38. South wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 53. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 53 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 48. Southwest wind 7 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 48 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely before 5pm, then rain and snow likely. Mostly cloudy, with a temperature rising to near 49 by 9am, then falling to around 42 during the remainder of the day. Northwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 49 °F⇓

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Snow likely before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 28 °F

    Snow Likely
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 44.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 38. South wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 53. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Wednesday Night
A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 48. Southwest wind 7 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday
Rain likely before 5pm, then rain and snow likely. Mostly cloudy, with a temperature rising to near 49 by 9am, then falling to around 42 during the remainder of the day. Northwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Snow likely before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 44.
Friday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 35.
Saturday
Sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Rain. Low around 40. Chance of precipitation is 80%.
Monday
Rain. High near 54. Chance of precipitation is 90%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 37.
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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:
9:48 pm EDT Mar 10, 2026
Forecast Valid:
10pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation