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Jefferson County Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | | |  | | | | |
| Chance of Showers | Showers | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 60°FHi: 16°C | Hi: 50°FHi: 10°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C | Lo: 39°FLo: 4°C | |||
| POP: 50% | POP: 70% | POP: 40% | POP: 40% | POP: 50% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM EDT Sun Oct 04 2026 
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Issued: 1217 PM EDT Sun Oct 4 2026
Key Messages
1) Periodic showers through tonight, then some lake effect rain showers Monday.
2) Below average temperatures expected Monday, widespread frost likely Monday night.
Discussion
... KEY MESSAGE 1...Periodic showers through tonight, then some lake effect rain showers Monday.
Prefrontal trough moving through the region this afternoon. A weakening band of showers associated with this feature will pass across western New York early this afternoon, and then any remaining shower activity will re...