Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms And Heavy Rain Expected From Ohio Valley To Interior Northeast

Scattered to numerous severe thunderstorms are expected from the Ohio Valley to western New England this afternoon and evening ahead of a strong cold front. Widespread damaging winds and a few tornadoes are possible, mainly over parts of New York into Pennsylvania. In addition, these storms may contain heavy rainfall that could lead to flash flooding. Read More >

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

74°F

23°C

Humidity 91%
Wind Speed SW 9 mph
Barometer 29.82 in (1009.6 mb)
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Last update 22 Aug 7:56 pm EDT
Extended Forecast for

Deep River CT

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 1am and 4am. Some of the storms could produce gusty winds and heavy rain.  Mostly cloudy, with a low around 74. South wind 7 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Heavy Rain

    Low: 74 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 8am.  Cloudy, then gradually becoming mostly sunny, with a high near 83. West wind around 8 mph.

    Chance
    T-storms then
    Partly Sunny

    High: 83 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 57. Northwest wind around 6 mph.

    Mostly Clear

    Low: 57 °F

  • Thursday

    Thursday: Sunny, with a high near 79. Light and variable wind becoming northwest around 5 mph in the afternoon.

    Sunny

    High: 79 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 57. North wind 3 to 6 mph.

    Partly Cloudy

    Low: 57 °F

  • Friday

    Friday: A 30 percent chance of showers before 10am.  Mostly sunny, with a high near 77.

    Chance
    Showers then
    Mostly Sunny

    High: 77 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 54.

    Mostly Clear

    Low: 54 °F

  • Saturday

    Saturday: Sunny, with a high near 77.

    Sunny

    High: 77 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 57.

    Mostly Clear

    Low: 57 °F

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly between 1am and 4am. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 74. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 83. West wind around 8 mph.
Wednesday Night
Mostly clear, with a low around 57. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 79. Light and variable wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 57. North wind 3 to 6 mph.
Friday
A 30 percent chance of showers before 10am. Mostly sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 58.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 77.
Click Map For Forecast
Point Forecast:
Deep River CT
 41.41°N 72.42°W (Elev. 3 ft)
7:01 pm EDT Aug 22, 2017
9pm EDT Aug 22, 2017-6pm EDT Aug 29, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database