St. Bonaventure, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Bonaventure, a community in Cattaraugus County, New York.
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. East wind around 1 mph.
7-day forecast for St. Bonaventure
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 1 mph E | 1% |
| Saturday | 70°F | Partly Sunny | 3 mph SE | 1% |
| Saturday Night | 54°F | Rain Showers Likely | 5 mph SE | 64% |
| Sunday | 68°F | Showers And Thunderstorms | 2 to 7 mph SW | 92% |
| Sunday Night | 43°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph N | 38% |
| Monday | 62°F | Mostly Cloudy | 8 mph NE | 2% |
| Monday Night | 41°F | Mostly Cloudy then Chance Rain Showers | 3 to 8 mph NE | 37% |
| Tuesday | 60°F | Chance Rain Showers | 5 to 8 mph E | 37% |
| Tuesday Night | 41°F | Chance Rain Showers | 5 to 8 mph E | 35% |
| Wednesday | 58°F | Chance Rain Showers | 9 mph E | 35% |
| Wednesday Night | 42°F | Chance Rain Showers | 3 to 8 mph SE | 43% |
| Thursday | 62°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 mph E | 43% |
| Thursday Night | 42°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph NE | 19% |
| Friday | 65°F | Slight Chance Rain Showers then Partly Sunny | 1 to 7 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov) for St. Bonaventure (42.079, -78.474). Updated through the day.
Growing snapshot for St. Bonaventure
Last spring frost
May 7
First fall frost
Oct 11
Growing season
156 days
Hardiness zone
5b
More local growing data for St. Bonaventure: nearby ZIP 14778 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Allegany
Arcade
Cattaraugus
Delevan
East Randolph
Ellicottville
Franklinville
Gowanda
Lime Lake
Limestone
Little Valley
Machias
Olean
Perrysburg
Randolph
Salamanca
South Dayton
West Valley
Weston Mills
Yorkshire
Climate data from the nearest NOAA station, Olean, Ny (1.6 mi from St. Bonaventure). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.