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
| 20 December 2025 Sat 5.1 ° C ( 41.2°F )  Partly cloudy |
Feels Like : 2.3 ° C / 36.2°F Humidity : % 65 Pressure : 1010 mb Wind Speed : 12.2 kmph / 7.6 miles from NNW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15-day weather forecast for Ontario Airport, Ontario, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 19 December 2025 Fri |  Patchy rain nearby |
0.4 ° C | 9.5 ° C | 4.6 ° C | % 76 | 38.5 km/h | 82% |
| 20 December 2025 Sat |  Mist |
-5.9 ° C | -1 ° C | -1.8 ° C | % 89 | 9.4 km/h | 0% |
| 21 December 2025 Sun |  Heavy rain |
-1.1 ° C | 5.7 ° C | 2.6 ° C | % 98 | 7.2 km/h | 85% |
| 22 December 2025 Mon | Patchy rain nearby |
0.5 ° C | 5 ° C | 3.5 ° C | % 97 | 8.3 km/h | 85% |
| 23 December 2025 Tue | Patchy rain nearby |
0.5 ° C | 3.9 ° C | 2.2 ° C | % 88 | 7.6 km/h | 72% |
| 24 December 2025 Wed |  Overcast |
3.1 ° C | 12 ° C | 5.6 ° C | % 79 | 31 km/h | 0% |
| 25 December 2025 Thu | Patchy rain nearby |
3.2 ° C | 10.1 ° C | 5.4 ° C | % 78 | 23 km/h | 72% |
| 26 December 2025 Fri | Patchy rain nearby |
1.3 ° C | 6 ° C | 3.5 ° C | % 88 | 8.3 km/h | 87% |
| 27 December 2025 Sat |  Sunny |
-0.1 ° C | 5.3 ° C | 1.9 ° C | % 81 | 6.8 km/h | 0% |
| 28 December 2025 Sun | Partly Cloudy |
-0.9 ° C | 3.6 ° C | 0.7 ° C | % 73 | 6.8 km/h | 0% |
| 29 December 2025 Mon | Sunny |
-1.9 ° C | 3.6 ° C | 0 ° C | % 67 | 6.5 km/h | 0% |
| 30 December 2025 Tue | Overcast |
-1 ° C | 3.8 ° C | 1.2 ° C | % 66 | 6.1 km/h | 0% |
| 31 December 2025 Wed | Partly Cloudy |
0.6 ° C | 8.4 ° C | 3.1 ° C | % 69 | 25.2 km/h | 0% |
| 01 January 2026 Thu | Sunny |
-1.1 ° C | 4.3 ° C | 1 ° C | % 71 | 7.2 km/h | 0% |
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