Portville, NY Weather & Growing Conditions
Tonight
47°F
Mostly Cloudy
Mostly cloudy, with a low around 47. Northeast wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Mostly Cloudy | 1 to 6 mph NE | 1% |
| Saturday | 67°F | Partly Sunny | 3 mph SE | 2% |
| Saturday Night | 54°F | Showers And Thunderstorms | 6 mph SE | 82% |
| Sunday | 66°F | Showers And Thunderstorms | 6 mph W | 90% |
| Sunday Night | 47°F | Chance Rain Showers | 7 mph NE | 53% |
| Monday | 61°F | Mostly Cloudy | 8 mph NE | 12% |
| Monday Night | 45°F | Chance Rain Showers | 8 mph E | 42% |
| Tuesday | 58°F | Chance Rain Showers | 8 mph E | 42% |
| Tuesday Night | 43°F | Chance Rain Showers | 7 to 10 mph E | 51% |
| Wednesday | 57°F | Chance Rain Showers | 9 mph SE | 51% |
| Wednesday Night | 44°F | Chance Showers And Thunderstorms | 5 to 8 mph SE | 49% |
| Thursday | 59°F | Chance Showers And Thunderstorms | 6 mph E | 49% |
| Thursday Night | 45°F | Chance Showers And Thunderstorms | 1 to 6 mph NE | 41% |
| Friday | 65°F | Partly Sunny | 2 to 6 mph N | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portville, NY
Last spring frost
May 7
First fall frost
Oct 11
Growing season
156 days
Hardiness zone
5b
Explore more for Portville, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Olean, Ny (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.