Scattered Thunderstorms Across the Eastern U.S. Today; Risk for Some Severe Thunderstorms and Flash Flooding

A cold front moving through the eastern U.S. will bring thunderstorms and heavy rainfall to that part of the country today, with localized flash flooding possible from the Northeast to the Deep South. Severe thunderstorms are possible across the Northeast and northern Mid-Atlantic. Out west, windy, dry conditions are keeping fire weather threats elevated. Read More >

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Thunderstorm in Vicinity Rain Fog/Mist

71°F

22°C

Humidity 100%
Wind Speed S 10 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 71°F (22°C)
Visibility 3.00 mi
Last update 26 Sep 5:56 am EDT
Extended Forecast for

Old Lyme CTSimilar City Names

Flood Advisory until September 26, 07:45am
Click here for hazard details and duration
...
  •  
    Flood Advisory until September 26, 07:45am

    NOW until
    7:45am Wed

    Flood Advisory

  • Today

    Today: A 40 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain.  Cloudy, with a high near 76. South wind 6 to 11 mph, with gusts as high as 21 mph.

    Heavy Rain

    High: 76 °F

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms before 3am. Some of the storms could produce gusty winds and heavy rain.  Mostly cloudy, with a low around 59. Southwest wind 9 to 13 mph becoming northwest after midnight.

    Heavy Rain

    Low: 59 °F

  • Thursday

    Thursday: Partly sunny, with a high near 69. Northeast wind 6 to 10 mph.

    Partly Sunny

    High: 69 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 56. East wind 5 to 7 mph.

    Chance
    Showers

    Low: 56 °F

  • Friday

    Friday: A 30 percent chance of showers.  Mostly cloudy, with a high near 68. East wind 3 to 6 mph.

    Chance
    Showers

    High: 68 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 57.

    Partly Cloudy

    Low: 57 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 71.

    Mostly Sunny

    High: 71 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 55.

    Mostly Clear

    Low: 55 °F

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Cloudy, with a high near 76. South wind 6 to 11 mph, with gusts as high as 21 mph.
Tonight
A 50 percent chance of showers and thunderstorms before 3am. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 59. Southwest wind 9 to 13 mph becoming northwest after midnight.
Thursday
Partly sunny, with a high near 69. Northeast wind 6 to 10 mph.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56. East wind 5 to 7 mph.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 68. East wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 67.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 72.
Click Map For Forecast
Point Forecast:
Old Lyme CTSimilar City Names
 41.31°N 72.33°W (Elev. 43 ft)
5:02 am EDT Sep 26, 2018
6am EDT Sep 26, 2018-6pm EDT Oct 2, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database