Gainesville, NY Weather Forecast
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Gainesville Weather Forecast
| REST OF TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy |
| Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1000 AM EDT Mon Sep 21 2026 

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Issued: 559 AM EDT Mon Sep 21 2026
Key Messages
1) Below normal temperatures will continue through the upcoming week, with a few showers possible at times mid-week.
Discussion
... KEY MESSAGE 1...Below normal temperatures will continue through the upcoming week, with a few showers possible at times mid-week.
Over the next few days the bulk of broad upper level troughing over eastern Canada will slowly drift eastward and out to sea. As it does so...the far southwestern extent of this trough will eventually break off and merge with a p...
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