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.

Mostly Cloudy

71°F

22°C

Humidity 63%
Wind Speed NW 10 mph
Barometer 29.72 in (1006.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 3:56 pm EDT
Extended Forecast for

3 Miles S Preston CT

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, increasing clouds, with a low around 53. Northwest wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. East wind 6 to 8 mph becoming south in the afternoon.

    High: 66 °F

    Patchy Fog
    then Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. South wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. West wind 6 to 9 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. Northwest wind around 6 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Showers after 8am. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 8pm. Otherwise, increasing clouds, with a low around 53. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. East wind 6 to 8 mph becoming south in the afternoon.
Tuesday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. South wind 5 to 9 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 78. West wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 50. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Showers after 8am. High near 66. Chance of precipitation is 90%.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 52. Breezy.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Preston CT
 41.51°N 71.99°W (Elev. 190 ft)
Last Update:
2:47 pm EDT Oct 12, 2026
Forecast Valid:
4pm EDT Oct 12, 2026-6pm EDT Oct 19, 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