Ontario, OR Weather Forecast
Local 7-day forecast
Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario, OR in one place.
Smoke. Partly sunny, with a high near 101. West wind 2 to 7 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 18, 2026 11:06 PM MDT.
The active forecast window currently covers Jul 19 to Jul 25, 2026 for Ontario, OR.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 25, 2026
- Latest sync
- Jul 18, 2026 11:06 PM MDT
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario
Monday looks like the warmest upcoming period in Ontario at 102 degrees F.
Friday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Friday Night at about 7 to 13 mph WNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 11:06 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
Areas of smoke. Mostly cloudy. Low around 70, with temperatures rising to around 74 overnight. Northwest wind 3 to 7 mph.
Areas of smoke before 7am. Mostly sunny, with a high near 102. North northwest wind around 6 mph.
Partly cloudy, with a low around 72. North northwest wind 7 to 12 mph.
Partly sunny, with a high near 100.
Partly cloudy, with a low around 71.
Partly sunny, with a high near 99.
Partly cloudy, with a low around 70.
A slight chance of rain showers after noon. Sunny, with a high near 100. Chance of precipitation is 20%.
A slight chance of rain showers before midnight. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Sunny, with a high near 100.
Mostly clear, with a low around 67.
Sunny, with a high near 98.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 19
|
Smoke
|
101°F |
2 to 7 mph
W
|
|
Sunday Night
Jul 19
|
Areas Of Smoke
|
70°F |
3 to 7 mph
NW
|
|
Monday
Jul 20
|
Areas Of Smoke then Mostly Sunny
|
102°F |
6 mph
NNW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
72°F |
7 to 12 mph
NNW
|
|
Tuesday
Jul 21
|
Partly Sunny
|
100°F |
3 to 7 mph
SW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
71°F |
8 mph
NW
|
|
Wednesday
Jul 22
|
Partly Sunny
|
99°F |
7 mph
NNW
|
|
Wednesday Night
Jul 22
|
Partly Cloudy
|
70°F |
2 to 8 mph
NNW
|
|
Thursday
Jul 23
|
Sunny then Slight Chance Rain Showers
|
100°F |
0 to 6 mph
ENE
|
|
Thursday Night
Jul 23
|
Slight Chance Rain Showers then Partly Cloudy
|
69°F |
6 mph
NW
|
|
Friday
Jul 24
|
Sunny
|
100°F |
5 to 10 mph
W
|
|
Friday Night
Jul 24
|
Mostly Clear
|
67°F |
7 to 13 mph
WNW
|
|
Saturday
Jul 25
|
Sunny
|
98°F |
5 to 8 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario.
