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

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fog

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.80 in (1009.0 mb)
Dewpoint 64°F (18°C)
Visibility 0.25 mi
Last update 7 Jun 8:56 am EDT
Extended Forecast for

Preston CTSimilar City Names

  • Today

    Today: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Cloudy, with a high near 73. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers
    Likely then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 76. Northeast wind 6 to 8 mph becoming east in the afternoon.

    High: 76 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 56. East wind 3 to 6 mph.

    Low: 56 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 72. East wind 6 to 8 mph.

    High: 72 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Showers likely, mainly after 2pm. Cloudy, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Cloudy, with a high near 73. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 76. Northeast wind 6 to 8 mph becoming east in the afternoon.
Sunday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 56. East wind 3 to 6 mph.
Monday
A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 72. East wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Showers likely, mainly after 2pm. Cloudy, with a high near 71. Chance of precipitation is 60%.
Tuesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Preston CTSimilar City Names
 41.55°N 71.98°W (Elev. 200 ft)
Last Update:
5:21 am EDT Jun 7, 2025
Forecast Valid:
9am EDT Jun 7, 2025-6pm EDT Jun 13, 2025
 
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Additional Resources

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Chance of Precipitation