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Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

19°C

67°F

Humidity 81%
Wind Speed E 7 km/h
Barometer 1019.1 mb (30.10 in)
Dewpoint 16°C (61°F)
Visibility 16 km
Last update 12 Sep 6:56 pm EDT
Extended Forecast for

2 Miles SSW West Mystic CT

Flood Watch September 13, 06:00am until September 13, 02:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 17. Calm wind.

    Low: 17 °C

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms before 2pm, then showers likely between 2pm and 5pm. Some of the storms could produce heavy rainfall. High near 23. East wind 8 to 11 km/h. Chance of precipitation is 100%. New rainfall amounts in excess of 4 cm possible.

    High: 23 °C

    Heavy Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 17. Calm wind.

    Low: 17 °C

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 23. Northwest wind 14 to 16 km/h, with gusts as high as 32 km/h.

    High: 23 °C

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 11. North wind around 10 km/h.

    Low: 11 °C

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 21.

    High: 21 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 12.

    Low: 12 °C

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 22.

    High: 22 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 16.

    Low: 16 °C

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 17. Calm wind.
Sunday
Showers and thunderstorms before 2pm, then showers likely between 2pm and 5pm. Some of the storms could produce heavy rainfall. High near 23. East wind 8 to 11 km/h. Chance of precipitation is 100%. New rainfall amounts in excess of 4 cm possible.
Sunday Night
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 17. Calm wind.
Monday
A 30 percent chance of showers before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 23. Northwest wind 14 to 16 km/h, with gusts as high as 32 km/h.
Monday Night
Clear, with a low around 11. North wind around 10 km/h.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 12.
Wednesday
Sunny, with a high near 22.
Wednesday Night
Mostly clear, with a low around 16.
Thursday
Sunny, with a high near 24.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Partly sunny, with a high near 24.
Friday Night
Mostly cloudy, with a low around 14.
Saturday
Mostly sunny, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW West Mystic CT
 41.33°N 72°W (Elev. 98 m)
Last Update:
2:46 pm EDT Sep 12, 2026
Forecast Valid:
7pm EDT Sep 12, 2026-6pm EDT Sep 19, 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