Portville, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portville, a village in Allegany County, New York.
Today
82°F
Sunny
Sunny, with a high near 82. South wind around 5 mph.
7-day forecast for Portville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 5 mph S | 0% |
| Tonight | 57°F | Mostly Clear | 3 mph S | 0% |
| Wednesday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph S | 36% |
| Wednesday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph S | 43% |
| Thursday | 83°F | Showers And Thunderstorms | 1 to 5 mph SW | 84% |
| Thursday Night | 63°F | Showers And Thunderstorms | 0 to 3 mph SW | 84% |
| Friday | 82°F | Showers And Thunderstorms | 0 to 5 mph SW | 84% |
| Friday Night | 61°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 84% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 56% |
| Saturday Night | 61°F | Showers And Thunderstorms Likely then Mostly Cloudy | 3 mph SW | 56% |
| Sunday | 84°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 7 mph SW | 23% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph SW | 26% |
| Monday | 83°F | Chance Rain Showers | 6 to 9 mph W | 46% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 3 to 7 mph W | 49% |
Forecast source: National Weather Service (api.weather.gov) for Portville (42.037, -78.337). Updated through the day.
Growing snapshot for Portville
Last spring frost
May 7
First fall frost
Oct 11
Growing season
156 days
Hardiness zone
5b
More local growing data for Portville: nearby ZIP 14770 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Olean, Ny (8.1 mi from Portville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.