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Cortland County Weather Forecast
| OVERNIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | |  |  | | | |  | | | |
| Mostly Cloudy | Chance of Showers | Showers | Mostly Cloudy | Partly Cloudy | Showers | Showers | Mostly Cloudy | Chance of Showers | Partly Sunny | Chance of Showers | Showers |
| Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C |
| POP: 100% | POP: 100% | POP: 70% | POP: 80% | POP: 30% | POP: 50% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 AM EDT Sun Oct 11 2026 
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Issued: 114 AM EDT Sun Oct 11 2026
Key Messages
1) Widespread rain across the region this morning through tonight with remnant moisture from Isaias pushing across the Mid Atlantic and Northeast U.S. Dry and warm weather returns on Monday.
2) A frontal system will bring numerous showers and a chance for thunderstorms on Tuesday. The pattern will remain active with zonal flow until the end of the week and then a potential deep upper trough for next weekend.
Discussion
... KEY MESSAGE 1
Tropical moisture from the remnants of Isaias enter...