Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Overcast
66°F
19°C
| Humidity | 93% |
| Wind Speed | N 7 mph |
| Barometer | 30.04 in (1017.3 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 22 Aug 8:56 am EDT |
Extended Forecast for
Old Lyme CT
Today
High: 74 °F
Cloudy
Tonight
Low: 63 °F
Showers
Likely and
Patchy FogSunday
High: 78 °F
Showers
Likely and
Patchy FogSunday Night
Low: 64 °F
Slight Chance
T-stormsMonday
High: 77 °F
Mostly Sunny
then Slight
Chance
T-stormsMonday Night
Low: 61 °F
Mostly Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 60 °F
Mostly Clear
Wednesday
High: 78 °F
Sunny
Detailed Forecast
Today
Cloudy, with a high near 74. Northeast wind around 5 mph becoming calm in the afternoon.
Tonight
A chance of showers, then showers likely and possibly a thunderstorm after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 63. Light east wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 64. West wind 3 to 7 mph.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 77. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 78.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
3:42 am EDT Aug 22, 2026
9am EDT Aug 22, 2026-6pm EDT Aug 28, 2026
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