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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 41.34°N 72.08°W (Text-Only)
NWS Forecast for: Groton CT
Issued by: National Weather Service New York, NY
Last Update: 7:08 am EDT Jun 30, 2026		Print

  • Today

    Today: Mostly sunny, with a high near 79. Light southwest wind becoming south 8 to 13 mph in the morning.

    High: 79 °F

    Mostly Sunny



  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Slight Chance
    T-storms


  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Southwest wind 11 to 14 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 69. Southwest wind 8 to 11 mph.

    Low: 69 °F

    Partly Cloudy



  • Thursday

    Thursday: Sunny, with a high near 86. Southwest wind 6 to 11 mph.

    High: 86 °F

    Sunny



  • Thursday
    Night

    Thursday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear



  • Friday

    Friday: Sunny, with a high near 89.

    High: 89 °F

    Sunny



  • Friday
    Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear



  • Independence
    Day

    Independence Day: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    Showers



    • Today: Mostly sunny, with a high near 79. Light southwest wind becoming south 8 to 13 mph in the morning.

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Southwest wind 11 to 14 mph.

    Wednesday Night: Partly cloudy, with a low around 69. Southwest wind 8 to 11 mph.

    Thursday: Sunny, with a high near 86. Southwest wind 6 to 11 mph.

    Thursday Night: Clear, with a low around 72.

    Friday: Sunny, with a high near 89.

    Friday Night: Mostly clear, with a low around 72.

    Independence Day: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 93.

    Saturday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 69.

    Sunday: Mostly sunny, with a high near 90.

    Sunday Night: A 30 percent chance of showers. Partly cloudy, with a low around 67.

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 85.


    Groton CT
     41.34°N 72.08°W (Elev. 36 ft)

    Visit your local NWS office at: https://www.weather.gov/okx/