Cornwall, CT Weather Forecast
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Cornwall Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY |
| Showers | Chance of Showers | Partly Cloudy | Chance of Showers | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C |
| POP: 90% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 AM EDT Thu Sep 03 2026 

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Issued: 302 AM EDT Thu Sep 3 2026
Key Messages
1) Scattered rain showers and isolated non-severe thunderstorms today across portions of eastern New York and western New England, with no flooding concerns expected.
2) Unsettled weather conditions continue tomorrow through Saturday across eastern New York and western New England, with no flooding concerns expected.
Discussion
... KEY MESSAGE 1... Rain showers continue to be sporadic this morning across eastern New York and western New England as a weather system is moving through. The...
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