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

34°F

1°C

Humidity 89%
Wind Speed Calm
Barometer 30.12 in (1020.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 20 Apr 6:56 am EDT
Extended Forecast for

2 Miles NNE Niantic CT

Frost Advisory April 20, 07:12am until April 20, 08:00am
Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
...
Freeze Warning
  •  
    Frost Advisory April 20, 07:12am until April 20, 08:00am

    NOW until 8:00am Mon

    Frost Advisory

  • Today

    High: 52 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Widespread frost after 3am. Otherwise, partly cloudy, with a low around 30. North wind around 6 mph.

    Low: 30 °F

    Partly Cloudy
    then Frost

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 50. Wind chill values between 25 and 35 early. North wind around 6 mph becoming calm.

    High: 50 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 2am. Increasing clouds, with a low around 37. South wind around 6 mph.

    Low: 37 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 53. South wind around 8 mph.

    High: 53 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers after 8am. Increasing clouds, with a high near 52. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Widespread frost after 3am. Otherwise, partly cloudy, with a low around 30. North wind around 6 mph.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 50. Wind chill values between 25 and 35 early. North wind around 6 mph becoming calm.
Tuesday Night
A 40 percent chance of showers after 2am. Increasing clouds, with a low around 37. South wind around 6 mph.
Wednesday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 53. South wind around 8 mph.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Partly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 41.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 57.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Niantic CT
 41.36°N 72.2°W (Elev. 200 ft)
Last Update:
6:13 am EDT Apr 20, 2026
Forecast Valid:
7am EDT Apr 20, 2026-6pm EDT Apr 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