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
| 21 December 2025 Sun 19.4 ° C ( 66.9°F )  Sunny |
Feels Like : 19.4 ° C / 66.9°F Humidity : % 55 Pressure : 1016 mb Wind Speed : 7.6 kmph / 4.7 miles from WSW 
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 |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat | Sunny |
9.5 ° C | 23.4 ° C | 14.6 ° C | % 74 | 7.6 km/h | 0% |
| 21 December 2025 Sun |  Partly Cloudy |
10.4 ° C | 20.3 ° C | 15.3 ° C | % 68 | 6.5 km/h | 0% |
| 22 December 2025 Mon | Partly Cloudy |
13.6 ° C | 21.7 ° C | 17 ° C | % 38 | 4.3 km/h | 0% |
| 23 December 2025 Tue |  Patchy rain nearby |
13.9 ° C | 16 ° C | 15.5 ° C | % 50 | 13.3 km/h | 81% |
| 24 December 2025 Wed |  Heavy rain |
12.2 ° C | 14.2 ° C | 13.7 ° C | % 85 | 26.6 km/h | 80% |
| 25 December 2025 Thu |  Moderate rain |
12 ° C | 16.6 ° C | 13.5 ° C | % 84 | 21.6 km/h | 60% |
| 26 December 2025 Fri | Patchy rain nearby |
12.2 ° C | 15.8 ° C | 13.7 ° C | % 81 | 5.4 km/h | 86% |
| 27 December 2025 Sat | Patchy rain nearby |
11.6 ° C | 15.9 ° C | 13.2 ° C | % 75 | 13.3 km/h | 85% |
| 28 December 2025 Sun | Moderate rain |
9.4 ° C | 11.6 ° C | 11.1 ° C | % 87 | 15.1 km/h | 88% |
| 29 December 2025 Mon | Patchy rain nearby |
9.2 ° C | 15.3 ° C | 11.9 ° C | % 70 | 5 km/h | 86% |
| 30 December 2025 Tue | Sunny |
8.7 ° C | 19.3 ° C | 13.3 ° C | % 44 | 7.6 km/h | 0% |
| 31 December 2025 Wed | Partly Cloudy |
11.2 ° C | 19.8 ° C | 14.5 ° C | % 30 | 6.8 km/h | 0% |
| 01 January 2026 Thu | Sunny |
10.8 ° C | 18.8 ° C | 14 ° C | % 34 | 7.2 km/h | 0% |
| 02 January 2026 Fri | Partly Cloudy |
10.1 ° C | 16.9 ° C | 13.2 ° C | % 45 | 7.2 km/h | 0% |
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