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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

63°F

17°C

Humidity 76%
Wind Speed SW 10 mph
Barometer 29.83 in (1010.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Jun 8:56 pm EDT
Extended Forecast for

Poquonock Bridge CT

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. Light south wind increasing to 5 to 9 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 59. Light south wind.

    Low: 59 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. South wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. West wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. Southwest wind 5 to 7 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 75. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 59. Light south wind.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. South wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. West wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Juneteenth
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 78.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Poquonock Bridge CT
 41.36°N 72.05°W (Elev. 79 ft)
Last Update:
3:07 pm EDT Jun 16, 2026
Forecast Valid:
9pm EDT Jun 16, 2026-6pm EDT Jun 23, 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