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.

Fog/Mist

39°F

4°C

Humidity 93%
Wind Speed E 6 mph
Barometer 30.45 in (1031.1 mb)
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Wind Chill35°F (2°C)
Last update 3 Apr 1:56 am EDT
Extended Forecast for

Mystic CT

  • Overnight

    Overnight: A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 5 mph.

    Low: 38 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Patchy fog before noon. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.

    High: 55 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 7 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 64. Light and variable wind becoming east 5 to 9 mph in the afternoon.

    High: 64 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 40. East wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 57. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Low around 39. Chance of precipitation is 80%.

    Low: 39 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 5 mph.
Friday
Patchy fog before noon. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 7 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 64. Light and variable wind becoming east 5 to 9 mph in the afternoon.
Saturday Night
A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 40. East wind 6 to 9 mph, with gusts as high as 21 mph.
Sunday
Showers. High near 57. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers, mainly before 8pm. Low around 39. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 48.
Tuesday Night
Mostly clear, with a low around 29.
Wednesday
Sunny, with a high near 47.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 53.
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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:
2:20 am EDT Apr 3, 2026
Forecast Valid:
4am EDT Apr 3, 2026-6pm EDT Apr 9, 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