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

Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

60°F

16°C

Humidity 48%
Wind Speed N 8 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 17 Oct 2:56 pm EDT
Extended Forecast for

2 Miles NNE Deep River CT

Frost Advisory October 17, 11:00pm until October 18, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. North wind 5 to 7 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 65. Calm wind.

    High: 65 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. South wind 5 to 14 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 56. South wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, mainly before 2pm. High near 66. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. North wind 5 to 7 mph becoming calm in the evening.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 65. Calm wind.
Saturday Night
Partly cloudy, with a low around 48. Calm wind.
Sunday
Mostly sunny, with a high near 69. South wind 5 to 14 mph.
Sunday Night
Showers, mainly after 2am. Low around 56. South wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, mainly before 2pm. High near 66. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 66.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 50.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 43.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Deep River CT
 41.43°N 72.42°W (Elev. 98 ft)
Last Update:
2:05 pm EDT Oct 17, 2025
Forecast Valid:
3pm EDT Oct 17, 2025-6pm EDT Oct 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation