St. Bonaventure, NY Weather & Growing Conditions
This Afternoon
70°F
Mostly Cloudy
Mostly cloudy, with a high near 70. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Cloudy | 6 mph S | 8% |
| Tonight | 56°F | Rain Showers | 1 to 5 mph SE | 90% |
| Sunday | 68°F | Showers And Thunderstorms | 6 mph W | 93% |
| Sunday Night | 43°F | Mostly Cloudy | 2 to 6 mph NE | 7% |
| Monday | 64°F | Mostly Cloudy | 5 to 8 mph NE | 2% |
| Monday Night | 42°F | Mostly Cloudy then Chance Rain Showers | 3 to 7 mph NE | 29% |
| Tuesday | 62°F | Chance Rain Showers | 3 to 8 mph E | 29% |
| Tuesday Night | 43°F | Chance Rain Showers | 5 to 8 mph E | 28% |
| Wednesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph E | 21% |
| Wednesday Night | 42°F | Slight Chance Rain Showers | 3 to 8 mph E | 23% |
| Thursday | 62°F | Slight Chance Rain Showers | 6 mph E | 23% |
| Thursday Night | 42°F | Slight Chance Rain Showers | 1 to 5 mph E | 19% |
| Friday | 65°F | Slight Chance Rain Showers | 1 to 7 mph NE | 15% |
| Friday Night | 42°F | Partly Cloudy | 1 to 7 mph N | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Bonaventure, NY
Last spring frost
May 7
First fall frost
Oct 11
Growing season
156 days
Hardiness zone
5b
Explore more for St. Bonaventure, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Olean, Ny (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.