Portville, NY Weather & Growing Conditions
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 2 mph E | 1% |
| Saturday | 69°F | Partly Sunny | 5 mph SE | 1% |
| Saturday Night | 54°F | Rain Showers Likely | 6 mph SE | 67% |
| Sunday | 66°F | Showers And Thunderstorms | 3 to 7 mph W | 94% |
| Sunday Night | 43°F | Chance Rain Showers then Mostly Cloudy | 5 to 8 mph N | 38% |
| Monday | 61°F | Mostly Cloudy | 8 mph NE | 2% |
| Monday Night | 41°F | Mostly Cloudy then Chance Rain Showers | 5 to 8 mph NE | 38% |
| Tuesday | 59°F | Chance Rain Showers | 5 to 8 mph E | 38% |
| Tuesday Night | 41°F | Chance Rain Showers | 6 to 9 mph E | 34% |
| Wednesday | 59°F | Chance Rain Showers | 9 mph E | 34% |
| Wednesday Night | 42°F | Chance Rain Showers | 5 to 8 mph SE | 44% |
| Thursday | 60°F | Chance Rain Showers | 6 mph E | 44% |
| Thursday Night | 42°F | Slight Chance Rain Showers | 2 to 6 mph NE | 20% |
| Friday | 64°F | Slight Chance Rain Showers | 2 to 7 mph NE | 16% |
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 (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.