Current conditions at
Groton / New London, Groton / New London Airport (KGON)
Lat: 41.33°NLon: 72.05°WElev: 10ft.
Overcast
67°F
19°C
| Humidity | 97% |
| Wind Speed | E 9 mph |
| Barometer | 29.85 in (1010.8 mb) |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 23 Aug 4:56 am EDT |
Extended Forecast for
Old Mystic CT
Overnight

Low: 62 °F
Chance
Showers and
Patchy FogSunday

High: 78 °F
Showers
Likely and
Patchy FogSunday Night

Low: 63 °F
Partly Cloudy
Monday

High: 78 °F
Sunny
Monday Night

Low: 60 °F
Mostly Clear
Tuesday

High: 76 °F
Sunny
Tuesday Night

Low: 58 °F
Mostly Clear
Wednesday

High: 78 °F
Sunny
Wednesday Night

Low: 62 °F
Mostly Clear
Detailed Forecast
Overnight
A 30 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 62. Light east wind.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. Northeast wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 63. South wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 78. Light southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Showers likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday
Showers likely. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 81.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Old Mystic CT
41.37°N 71.96°W (Elev. 43 ft)
41.37°N 71.96°W (Elev. 43 ft)
3:21 am EDT Aug 23, 2026
5am EDT Aug 23, 2026-6pm EDT Aug 29, 2026


