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.

Light Rain Fog/Mist

35°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 29.83 in (1010.0 mb)
Dewpoint 35°F (2°C)
Visibility 0.75 mi
Last update 28 Dec 11:56 pm EST
Extended Forecast for

Mystic CT

  • Overnight

    Overnight: Rain, mainly before 4am. Areas of fog before 4am. Temperature rising to around 42 by 4am. South wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F⇑

    Rain and
    Areas Fog

  • Monday

    Monday: Rain, mainly between 10am and 4pm. High near 51. Southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain

  • Monday Night

    Monday Night: A 30 percent chance of rain before 7pm. Mostly clear, with a low around 24. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 39 mph.

    Low: 24 °F

    Chance Rain
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 36 mph.

    High: 31 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. West wind 9 to 16 mph, with gusts as high as 30 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain, mainly before 4am. Areas of fog before 4am. Temperature rising to around 42 by 4am. South wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain, mainly between 10am and 4pm. High near 51. Southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
A 30 percent chance of rain before 7pm. Mostly clear, with a low around 24. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 39 mph.
Tuesday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 36 mph.
Tuesday Night
Partly cloudy, with a low around 23. West wind 9 to 16 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 20.
New Year's Day
Partly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 36.
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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:
12:02 am EST Dec 29, 2025
Forecast Valid:
12am EST Dec 29, 2025-6pm EST Jan 4, 2026
 
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Additional Resources

Radar & Satellite Image

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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