National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

39°F

4°C

Humidity 73%
Wind Speed W 7 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 19 Apr 11:56 pm EDT
Extended Forecast for

Mystic CT

Frost Advisory until April 20, 08:00am
Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Frost Advisory
Freeze Warning
  •  
    Frost Advisory until April 20, 08:00am

    NOW until 8:00am Mon

    Frost Advisory

  • Overnight

    Low: 34 °F

    Areas Frost

  • Monday

    Monday: A 30 percent chance of showers, mainly after 2pm. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 50 °F

    Areas Frost
    then Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 30. Wind chill values between 25 and 30. North wind 5 to 7 mph.

    Low: 30 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 50. Wind chill values between 25 and 35 early. North wind around 6 mph becoming south in the afternoon.

    High: 50 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 38. South wind around 6 mph.

    Low: 38 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Overnight
Areas of frost after 3am. Otherwise, clear, with a low around 34. West wind 3 to 6 mph.
Monday
A 30 percent chance of showers, mainly after 2pm. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon.
Monday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 30. Wind chill values between 25 and 30. North wind 5 to 7 mph.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 50. Wind chill values between 25 and 35 early. North wind around 6 mph becoming south in the afternoon.
Tuesday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 38. South wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 59.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 41.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 55.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 56.
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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:
6:50 pm EDT Apr 19, 2026
Forecast Valid:
12am EDT Apr 20, 2026-6pm EDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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