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Cornwall Lake Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | | | | |  | | |
| Mostly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Chance of Showers | Partly Cloudy | Partly Sunny |
| Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 51°FHi: 11°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 124 AM EST Sun Nov 15 2026 
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Issued: 115 AM EST Sun Nov 15 2026
Key Messages
- Largely dry weather with increasingly warm temperatures through the week.
- Rain chances creep into the picture Thursday.
- Dry Friday before potential for more widespread precip arrives this weekend as a larger system builds into the region.
Discussion
... Issued at 115 AM EST Sun Nov 15 2026
Pattern / Forecast Synopsis:
Cutoff low over Newfoundland and associated longwave troughing to ease its grip on the region the next couple days as ridging over the plains and associated surface high pr...