Ontario, NY Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario, NY in one place.
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 58. West wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Ontario, NY is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 13, 2026 8:36 PM EDT.
The active forecast window currently covers Oct 13 to Oct 20, 2026 for Ontario, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 8:36 PM EDT
- Forecast office
- BUF
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario
Wednesday looks like the warmest upcoming period in Ontario at 63 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday Night at about 18 to 22 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 8:36 PM EDT
- Coverage
- 8 days
- Time zone
- America/New_York
- Forecast office
- BUF
- Radar station
- KBUF
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a high near 63. Northwest wind 7 to 13 mph.
Mostly cloudy, with a low around 46. North wind 7 to 12 mph.
Partly sunny, with a high near 57. Northeast wind around 7 mph.
Rain showers after 8pm. Mostly cloudy, with a low around 47. Southeast wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers before 8am, then showers and thunderstorms. Cloudy, with a high near 61. Southwest wind 9 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers before 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. Northwest wind 18 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 80%.
A chance of rain and snow showers before 2pm. Mostly sunny, with a high near 46. Northwest wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Partly cloudy, with a low around 35.
Sunny, with a high near 58.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 63.
Mostly cloudy, with a low around 46.
Mostly sunny, with a high near 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 13
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
58°F |
8 to 13 mph
W
|
|
Wednesday
Oct 14
|
Mostly Cloudy
|
63°F |
7 to 13 mph
NW
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy
|
46°F |
7 to 12 mph
N
|
|
Thursday
Oct 15
|
Partly Sunny
|
57°F |
7 mph
NE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
47°F |
5 to 8 mph
SE
|
|
Friday
Oct 16
|
Showers And Thunderstorms
|
61°F |
9 to 21 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers then Chance Rain And Snow Showers
|
34°F |
18 to 22 mph
NW
|
|
Saturday
Oct 17
|
Chance Rain And Snow Showers
|
46°F |
22 mph
NW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
35°F |
6 to 17 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
58°F |
7 to 10 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
7 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
63°F |
7 to 10 mph
SW
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
46°F |
7 mph
SW
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
60°F |
5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario.
