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.

Overcast

55°F

13°C

Humidity 93%
Wind Speed SW 10 mph
Barometer 29.76 in (1007.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 6 May 7:56 pm EDT
Extended Forecast for

Preston CTSimilar City Names

  • Tonight

    Tonight: Showers, mainly before 2am. Low around 49. Southwest wind 5 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Showers

  • Thursday

    Thursday: A 30 percent chance of showers before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 64. Northwest wind 7 to 10 mph.

    High: 64 °F

    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Northwest wind 3 to 5 mph.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 62. West wind 6 to 13 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 45. Southwest wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers, mainly after noon. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
Showers, mainly before 2am. Low around 49. Southwest wind 5 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 30 percent chance of showers before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 64. Northwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 41. Northwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 62. West wind 6 to 13 mph.
Friday Night
Increasing clouds, with a low around 45. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Showers, mainly after noon. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Monday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 64.
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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:
6:12 pm EDT May 6, 2026
Forecast Valid:
8pm EDT May 6, 2026-6pm EDT May 13, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation