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.

Light Rain

63°F

17°C

Humidity 93%
Wind Speed E 12 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 1 Sep 4:56 pm EDT
Extended Forecast for

2 Miles NNE Old Mystic CT

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 72. East wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 59. East wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 73. Northeast wind around 8 mph.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, mainly after 5am. Increasing clouds, with a low around 61. Light east wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Partly Cloudy
    then Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 2pm, then a chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 76. Southwest wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 72. East wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 59. East wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Partly sunny, with a high near 73. Northeast wind around 8 mph.
Wednesday Night
Showers likely and possibly a thunderstorm, mainly after 5am. Increasing clouds, with a low around 61. Light east wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 2pm, then a chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 76. Southwest wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 55.
Labor Day
Sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Old Mystic CT
 41.39°N 71.95°W (Elev. 95 ft)
Last Update:
4:34 pm EDT Sep 1, 2026
Forecast Valid:
5pm EDT Sep 1, 2026-6pm EDT Sep 8, 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