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.

Fair

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.93 in (1013.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 20 Aug 5:56 am EDT
Extended Forecast for

2 Miles S Preston CT

  • Today

    Today: A 30 percent chance of showers after 5pm. Increasing clouds, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 84 °F

    Sunny then
    Chance
    Showers

  • Tonight

    Tonight: Showers, mainly before 2am. Low around 61. Northeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Low: 61 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 78. Northeast wind 6 to 8 mph.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers. High near 75. Northeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 75 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers after 5pm. Increasing clouds, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Showers, mainly before 2am. Low around 61. Northeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Friday
A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 78. Northeast wind 6 to 8 mph.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers. High near 75. Northeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Saturday Night
Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Preston CT
 41.51°N 71.99°W (Elev. 190 ft)
Last Update:
5:48 am EDT Aug 20, 2026
Forecast Valid:
6am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation