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
| 05 December 2025 Fri 11.1 ° C ( 52°F )  Clear |
Feels Like : 10.7 ° C / 51.3°F Humidity : % 39 Pressure : 1021 mb Wind Speed : 6.1 kmph / 3.8 miles from NE 
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 |
|---|---|---|---|---|---|---|---|
| 05 December 2025 Fri | Sunny |
7.9 ° C | 22.3 ° C | 13.9 ° C | % 36 | 6.8 km/h | 0% |
| 06 December 2025 Sat | Sunny |
10.6 ° C | 20.7 ° C | 14.8 ° C | % 54 | 7.2 km/h | 0% |
| 07 December 2025 Sun | Sunny |
10.5 ° C | 25.2 ° C | 16.3 ° C | % 48 | 6.5 km/h | 0% |
| 08 December 2025 Mon | Sunny |
12.2 ° C | 23.8 ° C | 16.7 ° C | % 31 | 8.6 km/h | 0% |
| 09 December 2025 Tue | Sunny |
14.3 ° C | 23.9 ° C | 17 ° C | % 24 | 8.3 km/h | 0% |
| 10 December 2025 Wed | Sunny |
14.6 ° C | 24.1 ° C | 18.1 ° C | % 23 | 5.4 km/h | 0% |
| 11 December 2025 Thu | Sunny |
13.9 ° C | 23.8 ° C | 17.9 ° C | % 28 | 5.4 km/h | 0% |
| 12 December 2025 Fri | Sunny |
14.7 ° C | 23.9 ° C | 18 ° C | % 30 | 7.2 km/h | 0% |
| 13 December 2025 Sat | Sunny |
12.9 ° C | 20.8 ° C | 15.9 ° C | % 37 | 7.2 km/h | 0% |
| 14 December 2025 Sun | Sunny |
11.5 ° C | 20 ° C | 15.1 ° C | % 39 | 7.6 km/h | 0% |
| 15 December 2025 Mon | Sunny |
12.2 ° C | 20.5 ° C | 15.3 ° C | % 37 | 8.6 km/h | 0% |
| 16 December 2025 Tue | Sunny |
11.3 ° C | 18.4 ° C | 14.3 ° C | % 48 | 10.8 km/h | 0% |
| 17 December 2025 Wed | Sunny |
10.2 ° C | 17.4 ° C | 13.7 ° C | % 67 | 9.7 km/h | 0% |
| 18 December 2025 Thu |  Partly Cloudy |
12.4 ° C | 17.7 ° C | 15 ° C | % 79 | 6.8 km/h | 0% |
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