Portville, NY Weather & Growing Conditions
Today
73°F
Partly Sunny
Partly sunny, with a high near 73. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Partly Sunny | 5 to 10 mph S | 0% |
| Tonight | 57°F | Rain Showers | 12 mph S | 88% |
| Thursday | 69°F | Rain Showers | 7 to 10 mph SW | 85% |
| Thursday Night | 44°F | Partly Cloudy | 2 to 6 mph SW | 0% |
| Friday | 61°F | Mostly Cloudy then Chance Rain Showers | 2 to 6 mph SW | 28% |
| Friday Night | 39°F | Rain Showers Likely | 3 mph W | 56% |
| Saturday | 51°F | Rain Showers Likely | 3 to 8 mph W | 61% |
| Saturday Night | 33°F | Rain Showers Likely | 7 mph NW | 61% |
| Sunday | 51°F | Slight Chance Rain Showers | 7 to 10 mph W | 16% |
| Sunday Night | 30°F | Slight Chance Rain Showers | 8 mph W | 20% |
| Monday | 52°F | Chance Rain Showers | 7 to 10 mph W | 27% |
| Monday Night | 31°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph SW | 23% |
| Tuesday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 7 to 12 mph W | 17% |
| Tuesday Night | 30°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 8 mph W | 17% |
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 Nov 4, 2026.