Harman US

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

WhenTempForecastWindPrecip
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.