Ontario, NY Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. Northwest wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 2 to 6 mph NW | 0% |
| Tonight | 63°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 87°F | Mostly Sunny | 5 mph S | 13% |
| Wednesday Night | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph S | 31% |
| Thursday | 85°F | Showers And Thunderstorms Likely | 5 mph SW | 68% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 mph SW | 68% |
| Friday | 82°F | Showers And Thunderstorms Likely | 5 mph W | 57% |
| Friday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 mph SW | 57% |
| Saturday | 83°F | Chance Showers And Thunderstorms | 5 mph W | 37% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 30% |
| Sunday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 mph SW | 24% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph SW | 38% |
| Monday | 83°F | Chance Rain Showers | 8 to 12 mph W | 41% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 41% |
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 Aug 4, 2026.