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

57°F

14°C

Humidity 90%
Wind Speed SW 6 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 27 May 1:56 am EDT
Extended Forecast for

Groton / New London Airport CT

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 61. Southwest wind around 7 mph.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 80. Southwest wind 7 to 14 mph.

    High: 80 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 59. West wind around 8 mph becoming north after midnight.

    Low: 59 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers after 2pm. Mostly sunny, with a high near 76. North wind around 8 mph.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 2pm. Partly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 61. Southwest wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 80. Southwest wind 7 to 14 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 59. West wind around 8 mph becoming north after midnight.
Thursday
A 50 percent chance of showers after 2pm. Mostly sunny, with a high near 76. North wind around 8 mph.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 71.
Friday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 54.
Saturday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 52.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.34°N 72.05°W (Elev. 49 ft)
Last Update:
2:20 pm EDT May 26, 2026
Forecast Valid:
2am EDT May 27, 2026-6pm EDT Jun 2, 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