Ontario, NY Weather & Growing Conditions
This Afternoon
66°F
Partly Sunny
Partly sunny, with a high near 66. Northeast wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Partly Sunny | 8 mph NE | 0% |
| Tonight | 53°F | Mostly Cloudy then Rain Showers | 7 mph SE | 78% |
| Sunday | 67°F | Rain Showers | 5 to 13 mph NE | 77% |
| Sunday Night | 50°F | Mostly Cloudy | 6 to 10 mph NE | 1% |
| Monday | 61°F | Partly Sunny | 13 mph NE | 0% |
| Monday Night | 48°F | Mostly Cloudy | 7 to 12 mph NE | 1% |
| Tuesday | 63°F | Partly Sunny | 7 to 13 mph E | 4% |
| Tuesday Night | 48°F | Mostly Cloudy | 6 to 12 mph E | 4% |
| Wednesday | 66°F | Mostly Sunny | 7 to 12 mph E | 3% |
| Wednesday Night | 47°F | Mostly Cloudy | 7 to 10 mph E | 7% |
| Thursday | 65°F | Partly Sunny | 9 mph E | 11% |
| Thursday Night | 48°F | Mostly Cloudy | 3 to 8 mph E | 13% |
| Friday | 66°F | Partly Sunny then Slight Chance Rain Showers | 5 to 9 mph NE | 15% |
| Friday Night | 50°F | Slight Chance Rain Showers | 7 mph NE | 16% |
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 Sep 19, 2026.