Ontario, OR Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario, OR in one place.
Rain showers likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
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: Apr 9, 2026 2:03 PM MDT.
The active forecast window currently covers Apr 12 to Apr 15, 2026 for Ontario, OR.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 12 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 2:03 PM MDT
- Forecast office
- BOI
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario
Wednesday looks like the warmest upcoming period in Ontario at 64 degrees F.
Monday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Monday at about 7 to 12 mph W.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 2:03 PM MDT
- Coverage
- 4 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
A chance of rain showers. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Partly cloudy, with a low around 37.
Mostly sunny, with a high near 62.
Partly cloudy, with a low around 37.
A slight chance of rain showers. Partly sunny, with a high near 64. Chance of precipitation is 20%.
A chance of rain showers before midnight. Mostly cloudy, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday Night
Apr 12
|
Rain Showers Likely
|
38°F |
9 mph
W
|
|
Monday
Apr 12
|
Chance Rain Showers
|
58°F |
7 to 12 mph
W
|
|
Monday Night
Apr 13
|
Partly Cloudy
|
37°F |
7 to 10 mph
NW
|
|
Tuesday
Apr 13
|
Mostly Sunny
|
62°F |
7 mph
W
|
|
Tuesday Night
Apr 14
|
Partly Cloudy
|
37°F |
3 to 7 mph
WSW
|
|
Wednesday
Apr 14
|
Slight Chance Rain Showers
|
64°F |
2 to 7 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Rain Showers then Mostly Cloudy
|
38°F |
8 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario.
