Ontario, OR Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario, OR in one place.
Partly sunny, with a high near 96. West northwest wind 7 to 10 mph.
Local Weather Overview
This forecast page for Ontario, OR 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: Jul 11, 2026 9:55 PM MDT.
The active forecast window currently covers Jul 12 to Jul 18, 2026 for Ontario, OR.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 12 to Jul 18, 2026
- Latest sync
- Jul 11, 2026 9:55 PM MDT
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario
Friday looks like the warmest upcoming period in Ontario at 99 degrees F.
Thursday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Thursday Night at about 10 to 14 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Jul 11, 2026 9:55 PM MDT
- Coverage
- 7 days
- Time zone
- America/Boise
- Forecast office
- BOI
- Radar station
- KCBX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 68. East wind 2 to 7 mph.
Partly sunny, with a high near 98. West wind around 7 mph.
Mostly cloudy, with a low around 71. West wind around 7 mph.
Partly sunny, with a high near 96.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunny, with a high near 98.
Mostly clear, with a low around 66.
Sunny, with a high near 97.
Mostly clear, with a low around 65.
Sunny, with a high near 99.
Partly cloudy, with a low around 67.
Mostly sunny, with a high near 99.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 12
|
Partly Sunny
|
96°F |
7 to 10 mph
WNW
|
|
Sunday Night
Jul 12
|
Mostly Cloudy
|
68°F |
2 to 7 mph
E
|
|
Monday
Jul 13
|
Partly Sunny
|
98°F |
7 mph
W
|
|
Monday Night
Jul 13
|
Mostly Cloudy
|
71°F |
7 mph
W
|
|
Tuesday
Jul 14
|
Partly Sunny
|
96°F |
3 to 8 mph
W
|
|
Tuesday Night
Jul 14
|
Chance Showers And Thunderstorms then Partly Cloudy
|
67°F |
8 mph
NW
|
|
Wednesday
Jul 15
|
Sunny
|
98°F |
3 to 7 mph
NW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
66°F |
7 to 12 mph
NW
|
|
Thursday
Jul 16
|
Sunny
|
97°F |
12 mph
NW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
65°F |
10 to 14 mph
NW
|
|
Friday
Jul 17
|
Sunny
|
99°F |
5 to 9 mph
NW
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
67°F |
7 mph
NNW
|
|
Saturday
Jul 18
|
Mostly Sunny
|
99°F |
3 to 7 mph
NNE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario.
