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.

Overcast

54°F

12°C

Humidity 57%
Wind Speed NW 9 mph
Barometer 29.76 in (1007.8 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 9 Nov 2:56 pm EST
Extended Forecast for

Old Mystic CT

  • This Afternoon

    This Afternoon: A 30 percent chance of rain before 4pm. Mostly sunny, with a high near 58. Northwest wind around 11 mph, with gusts as high as 24 mph.

    High: 58 °F

    Chance Rain

  • Tonight

    Tonight: Mostly clear, with a low around 36. West wind 6 to 8 mph, with gusts as high as 22 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy frost before 7am. Otherwise, mostly sunny, with a high near 58. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 58 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. West wind around 6 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Sunny, with a high near 59. West wind 5 to 9 mph becoming light in the afternoon.

    High: 59 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

  • Friday

    Friday: Rain likely. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.

    High: 48 °F

    Rain Likely

Detailed Forecast

This Afternoon
A 30 percent chance of rain before 4pm. Mostly sunny, with a high near 58. Northwest wind around 11 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 36. West wind 6 to 8 mph, with gusts as high as 22 mph.
Tuesday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 58. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 39. West wind around 6 mph, with gusts as high as 20 mph.
Veterans Day
Sunny, with a high near 59. West wind 5 to 9 mph becoming light in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 58.
Thursday Night
Rain likely. Cloudy, with a low around 37. Chance of precipitation is 70%.
Friday
Rain likely. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.
Friday Night
A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Mystic CT
 41.37°N 71.99°W (Elev. 131 ft)
Last Update:
1:27 pm EST Nov 9, 2026
Forecast Valid:
3pm EST Nov 9, 2026-6pm EST Nov 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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