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Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Overcast
49°F
9°C
| Humidity | 83% |
| Wind Speed | SW 7 mph |
| Barometer | 30.04 in (1017.1 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 31 Mar 4:56 am EDT |
Extended Forecast for
Old Lyme CT
Overnight
Low: 46 °F
Showers
LikelyTuesday
High: 63 °F
Showers
LikelyTuesday Night
Low: 51 °F
Slight Chance
T-storms then
Chance
ShowersWednesday
High: 66 °F
Chance Rain
then Rain
LikelyWednesday Night
Low: 39 °F
Rain
Thursday
High: 46 °F
Chance Rain
Thursday Night
Low: 39 °F
Cloudy
Friday
High: 58 °F
Mostly Cloudy
Friday Night
Low: 48 °F
Mostly Cloudy
Detailed Forecast
Overnight
Showers likely. Mostly cloudy, with a low around 46. Southwest wind around 8 mph. Chance of precipitation is 70%.
Tuesday
Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 63. Southwest wind 9 to 14 mph. Chance of precipitation is 60%.
Tuesday Night
A slight chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 51. Southwest wind around 11 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers before 8am, then a chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 66. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain likely and possibly a thunderstorm, then rain after 8pm. Low around 39. Northeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of rain before 2pm. Cloudy, with a high near 46.
Thursday Night
Cloudy, with a low around 39.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 64.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 45.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 61.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 52.
Additional Forecasts and Information
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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)
2:46 am EDT Mar 31, 2026
5am EDT Mar 31, 2026-6pm EDT Apr 6, 2026
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