Ontario, NY Weather & Growing Conditions
This Afternoon
72°F
Partly Sunny
Partly sunny, with a high near 72. Southwest wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Partly Sunny | 3 to 7 mph SW | 5% |
| Tonight | 56°F | Mostly Cloudy | 3 to 7 mph S | 5% |
| Wednesday | 76°F | Partly Sunny | 8 mph S | 4% |
| Wednesday Night | 59°F | Light Rain | 8 mph S | 87% |
| Thursday | 70°F | Light Rain Likely | 6 to 9 mph SW | 70% |
| Thursday Night | 48°F | Mostly Cloudy | 6 mph SW | 9% |
| Friday | 63°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph W | 18% |
| Friday Night | 44°F | Chance Light Rain | 6 mph N | 45% |
| Saturday | 54°F | Chance Light Rain | 9 mph NW | 51% |
| Saturday Night | 38°F | Chance Light Rain | 7 mph W | 42% |
| Sunday | 54°F | Partly Sunny | 7 to 12 mph W | 14% |
| Sunday Night | 36°F | Chance Light Rain | 8 mph W | 29% |
| Monday | 53°F | Chance Light Rain | 9 to 14 mph NW | 32% |
| Monday Night | 37°F | Chance Light Rain | 8 mph W | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ontario, NY
Last spring frost
May 1
First fall frost
Oct 20
Growing season
171 days
Hardiness zone
6b
Explore more for Ontario, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Webster 2 Ne, Ny (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.