Ontario International Airport (ONT) 15 Day Weather Forecast, Ontario United States
Current weather conditions and 15 day weather forecast for Ontario International 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 ONT
| 14 May 2026 Thu 20.1 ° C ( 68.2°F )  Sunny |
Feels Like : 20.1 ° C / 68.2°F Humidity : % 57 Pressure : 1017 mb Wind Speed : 7.2 kmph / 4.5 miles from SW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 25 |
15-day weather forecast for Ontario International Airport, Ontario, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 14 May 2026 Thu | Sunny |
11.1 ° C | 29.8 ° C | 19.6 ° C | % 63 | 16.9 km/h | 0% |
| 15 May 2026 Fri | Sunny |
15.6 ° C | 26.3 ° C | 20.2 ° C | % 56 | 18 km/h | 0% |
| 16 May 2026 Sat | Sunny |
15.1 ° C | 24.5 ° C | 19.2 ° C | % 59 | 20.5 km/h | 0% |
| 17 May 2026 Sun | Sunny |
15.2 ° C | 25.8 ° C | 19.3 ° C | % 57 | 20.9 km/h | 0% |
| 18 May 2026 Mon | Sunny |
15.8 ° C | 28.9 ° C | 21.3 ° C | % 47 | 18.7 km/h | 0% |
| 19 May 2026 Tue | Sunny |
16.6 ° C | 27.6 ° C | 21.5 ° C | % 50 | 17.6 km/h | 0% |
| 20 May 2026 Wed |  Partly Cloudy |
17.1 ° C | 28 ° C | 21.7 ° C | % 51 | 18 km/h | 0% |
| 21 May 2026 Thu | Partly Cloudy |
16.9 ° C | 27.6 ° C | 21.1 ° C | % 57 | 20.2 km/h | 0% |
| 22 May 2026 Fri | Partly Cloudy |
16.6 ° C | 20.6 ° C | 18 ° C | % 70 | 14 km/h | 0% |
| 23 May 2026 Sat |  Patchy rain nearby |
14.4 ° C | 21.9 ° C | 17.3 ° C | % 61 | 20.9 km/h | 84% |
| 24 May 2026 Sun | Sunny |
13.2 ° C | 22.5 ° C | 16.9 ° C | % 50 | 24.1 km/h | 0% |
| 25 May 2026 Mon | Sunny |
12.2 ° C | 23.6 ° C | 17.4 ° C | % 49 | 17.3 km/h | 0% |
| 26 May 2026 Tue | Sunny |
14.2 ° C | 25.2 ° C | 18.8 ° C | % 50 | 19.8 km/h | 0% |
| 27 May 2026 Wed | Sunny |
14.1 ° C | 23.1 ° C | 17.6 ° C | % 58 | 18.7 km/h | 0% |
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