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

71°F

22°C

Humidity 96%
Wind Speed SW 7 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 8:56 pm EDT
Extended Forecast for

Mystic CTSimilar City Names

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 82 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. Light southwest wind.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Calm wind becoming west around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers after 8am. Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 67. Calm wind.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 68. Light southwest wind.
Thursday
Mostly sunny, with a high near 82. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 62. Calm wind.
Friday
Mostly sunny, with a high near 80.
Friday Night
Mostly cloudy, with a low around 63.
Saturday
A 50 percent chance of showers after 8am. Partly sunny, with a high near 76.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 8am. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 64.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mystic CTSimilar City Names
 41.35°N 71.96°W (Elev. 0 ft)
Last Update:
2:34 pm EDT Aug 18, 2026
Forecast Valid:
9pm EDT Aug 18, 2026-6pm EDT Aug 25, 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