Ontario Airport (ONO) 15 Day Weather Forecast, Ontario United States
Current weather conditions and 15 day weather forecast for Ontario Airport in Ontario, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at ONO
| 03 August 2026 Mon 17.4 ° C ( 63.3°F )  Clear |
Feels Like : 12.3 ° C / 54.1°F Humidity : % 38 Pressure : 1013 mb Wind Speed : 18.4 kmph / 11.4 miles from NW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Ontario Airport, Ontario, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 03 August 2026 Mon | Sunny |
15.1 ° C | 31.3 ° C | 23.4 ° C | % 24 | 20.9 km/h | 0% |
| 04 August 2026 Tue |  Smoky haze |
12.9 ° C | 34.8 ° C | 23.8 ° C | % 20 | 11.2 km/h | 0% |
| 05 August 2026 Wed | Smoky haze |
16.3 ° C | 38.2 ° C | 27.2 ° C | % 13 | 10.1 km/h | 1% |
| 06 August 2026 Thu | Smoky haze |
17.9 ° C | 42.2 ° C | 29.9 ° C | % 11 | 9.7 km/h | 0% |
| 07 August 2026 Fri | Smoky haze |
20.2 ° C | 43.6 ° C | 31.5 ° C | % 11 | 15.1 km/h | 0% |
| 08 August 2026 Sat | Sunny |
20.7 ° C | 42.9 ° C | 31.6 ° C | % 11 | 24.8 km/h | 0% |
| 09 August 2026 Sun | Sunny |
19.4 ° C | 40 ° C | 29.3 ° C | % 16 | 19.1 km/h | 0% |
| 10 August 2026 Mon | Sunny |
16.4 ° C | 37.4 ° C | 26.4 ° C | % 17 | 16.9 km/h | 0% |
| 11 August 2026 Tue | Sunny |
16.2 ° C | 37.5 ° C | 26.4 ° C | % 19 | 25.9 km/h | 0% |
| 12 August 2026 Wed | Sunny |
14.8 ° C | 34 ° C | 24.2 ° C | % 20 | 18 km/h | 0% |
| 13 August 2026 Thu | Sunny |
14.1 ° C | 35.9 ° C | 24.6 ° C | % 22 | 11.5 km/h | 0% |
| 14 August 2026 Fri | Sunny |
16.4 ° C | 39.2 ° C | 27.6 ° C | % 17 | 11.5 km/h | 0% |
| 15 August 2026 Sat |  Partly Cloudy |
21.3 ° C | 39.1 ° C | 29.4 ° C | % 16 | 19.4 km/h | 2% |
| 16 August 2026 Sun | Sunny |
19.9 ° C | 38.6 ° C | 29.2 ° C | % 17 | 25.9 km/h | 2% |
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