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.

A Few Clouds

47°F

8°C

Humidity 90%
Wind Speed Calm
Barometer 30.04 in (1017.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 31 Mar 2:56 am EDT
Extended Forecast for

Conning Towers-Nautilus Park CT

  • Overnight

    Overnight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 46. Southwest wind around 9 mph. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 60. Southwest wind 10 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 53. Southwest wind 11 to 14 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 8am, then a chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 63. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain, mainly before 2am. Low around 41. Northeast wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain

  • Thursday

    Thursday: A 30 percent chance of rain before 2pm. Cloudy, with a high near 44.

    High: 44 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Cloudy, with a low around 40.

    Low: 40 °F

    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 46. Southwest wind around 9 mph. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 60. Southwest wind 10 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A slight chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 53. Southwest wind 11 to 14 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers before 8am, then a chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 63. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain, mainly before 2am. Low around 41. Northeast wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 30 percent chance of rain before 2pm. Cloudy, with a high near 44.
Thursday Night
Cloudy, with a low around 40.
Friday
Mostly cloudy, with a high near 55.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 46.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 58.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conning Towers-Nautilus Park CT
 41.36°N 72.08°W (Elev. 79 ft)
Last Update:
2:46 am EDT Mar 31, 2026
Forecast Valid:
3am EDT Mar 31, 2026-6pm EDT Apr 6, 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