Weather WorldCattaraugus County-Olean, NY Weather Forecast
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Cattaraugus County-Olean Weather Forecast
| OVERNIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | |  |  | |  | | | |
| Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Sunny | Mostly Cloudy | Mostly Sunny | Clear | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1000 PM EDT Mon Sep 21 2026 
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Issued: 721 PM EDT Mon Sep 21 2026
Key Messages
1) Below normal temperatures and mainly dry weather will continue through the upcoming week, with a few showers possible across the Southern Tier at times.
Discussion
... KEY MESSAGE 1...Below normal temperatures and mainly dry weather will continue through the upcoming week, with a few showers possible across the Southern Tier at times.
An upper level trough and closed low will slowly move east across the Midwest to Ohio Valley through mid-week. High pressure will remain across eastern...