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Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Overcast
64°F
18°C
| Humidity | 93% |
| Wind Speed | E 12 G 23 mph |
| Barometer | 29.96 in (1014.4 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 22 Jun 9:56 pm EDT |
Extended Forecast for
Old Lyme CT
Tonight

Low: 66 °F
Showers
Tuesday

High: 73 °F
Showers
Tuesday Night
Low: 61 °F
Showers
Likely then
Partly CloudyWednesday

High: 81 °F
Sunny
Wednesday Night

Low: 62 °F
Mostly Clear
Thursday

High: 80 °F
Sunny
Thursday Night
Low: 63 °F
Partly Cloudy
then Chance
ShowersFriday

High: 78 °F
Chance
ShowersFriday Night
Low: 64 °F
Partly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
Showers and possibly a thunderstorm. Steady temperature around 66. South wind 6 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm. High near 73. South wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 61. North wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Sunny, with a high near 81. West wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 62. Calm wind.
Thursday
Sunny, with a high near 80.
Thursday Night
A 50 percent chance of showers after 2am. Partly cloudy, with a low around 63.
Friday
A 40 percent chance of showers before 2pm. Partly sunny, with a high near 78.
Friday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 64.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 77.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 63.
Monday
Mostly sunny, with a high near 81.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Old Lyme CT
41.29°N 72.33°W (Elev. 16 ft)
41.29°N 72.33°W (Elev. 16 ft)
8:23 pm EDT Jun 22, 2026
10pm EDT Jun 22, 2026-6pm EDT Jun 29, 2026


