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
| 24 August 2026 Mon 22.6 ° C ( 72.7°F )  Clear |
Feels Like : 18.7 ° C / 65.7°F Humidity : % 26 Pressure : 1011 mb Wind Speed : 11.2 kmph / 6.9 miles from WNW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 2 |
15-day weather forecast for Ontario Airport, Ontario, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 23 August 2026 Sun | Sunny |
17.8 ° C | 34.1 ° C | 26.1 ° C | % 23 | 23.4 km/h | 17% |
| 24 August 2026 Mon |  Overcast |
18.1 ° C | 33.5 ° C | 24.6 ° C | % 24 | 15.8 km/h | 36% |
| 25 August 2026 Tue | Overcast |
20.7 ° C | 35.9 ° C | 28.2 ° C | % 30 | 16.6 km/h | 7% |
| 26 August 2026 Wed | Overcast |
22.1 ° C | 35.9 ° C | 29.4 ° C | % 24 | 19.8 km/h | 8% |
| 27 August 2026 Thu | Overcast |
20.9 ° C | 33.5 ° C | 28 ° C | % 25 | 28.1 km/h | 7% |
| 28 August 2026 Fri | Sunny |
17.6 ° C | 31.6 ° C | 24.8 ° C | % 28 | 14.4 km/h | 1% |
| 29 August 2026 Sat | Sunny |
17.2 ° C | 31.9 ° C | 24.6 ° C | % 21 | 15.1 km/h | 1% |
| 30 August 2026 Sun | Sunny |
15.7 ° C | 26.8 ° C | 22.1 ° C | % 30 | 33.5 km/h | 0% |
| 31 August 2026 Mon | Sunny |
12 ° C | 24.5 ° C | 18.9 ° C | % 30 | 14.4 km/h | 1% |
| 01 September 2026 Tue | Sunny |
14.2 ° C | 29.6 ° C | 21.9 ° C | % 18 | 12.2 km/h | 0% |
| 02 September 2026 Wed | Sunny |
17 ° C | 30.6 ° C | 23.8 ° C | % 17 | 15.8 km/h | 0% |
| 03 September 2026 Thu | Sunny |
16.5 ° C | 30.7 ° C | 24.2 ° C | % 22 | 13.3 km/h | 3% |
| 04 September 2026 Fri | Sunny |
18.5 ° C | 33.6 ° C | 26.5 ° C | % 16 | 8.3 km/h | 1% |
| 05 September 2026 Sat | Sunny |
21.2 ° C | 34.9 ° C | 27.8 ° C | % 18 | 28.8 km/h | 2% |
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