Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Fair
68°F
20°C
| Humidity | 100% |
| Wind Speed | S 3 mph |
| Barometer | 30.23 in (1023.7 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 9 Aug 9:56 pm EDT |
Extended Forecast for
Old Lyme CT
Tonight
Low: 56 °F
Mostly Clear
then Patchy
FogSunday
High: 83 °F
Sunny
Sunday Night
Low: 60 °F
Patchy Fog
Monday
High: 87 °F
Sunny
Monday Night
Low: 67 °F
Mostly Clear
Tuesday
High: 87 °F
Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Wednesday Night
Low: 70 °F
Partly Cloudy
Detailed Forecast
Tonight
Patchy fog after midnight. Otherwise, mostly clear, with a low around 56. Light and variable wind.
Sunday
Sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Patchy fog after 9pm. Otherwise, mostly clear, with a low around 60. Calm wind.
Monday
Sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. Light southwest wind.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 67.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 82.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Old Lyme CT
41.31°N 72.33°W (Elev. 43 ft)
41.31°N 72.33°W (Elev. 43 ft)
6:26 pm EDT Aug 9, 2025
10pm EDT Aug 9, 2025-6pm EDT Aug 16, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
