Average annual temperature is 12.3 °C
Absolute maximum temperature: 41.5 °C
Absolute minimum temperature: -11.4 °C
Number of sunny days: 219 days
Number of rainy days: 122 days
Number of snow days: 24 days
Look at detailed online map of Ontario Heights
* Weather data for Ontario Heights United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 9.4 | 13.2 | 13.9 | 30.9 | 32.4 | 35.6 | 40.4 | 41.5 | 32.3 | 28.3 | 14.4 | 10.0 |
| Average daytime temperature (°C) | 4.7 | 6.7 | 9.0 | 16.7 | 25.8 | 28.1 | 36.8 | 33.5 | 27.7 | 19.7 | 9.2 | 4.6 |
| Average temperature (°C) | 0.1 | 0.7 | 3.1 | 9.3 | 18.6 | 21.2 | 28.9 | 26.1 | 20.0 | 13.3 | 4.4 | 0.8 |
| Average night temperature (°C) | -3.2 | -3.3 | -1.2 | 4.0 | 12.6 | 15.3 | 21.0 | 19.4 | 13.8 | 8.2 | 0.7 | -1.7 |
| Absolute minimum temperature (°C) | -11.4 | -9.0 | -5.3 | -2.4 | 5.8 | 8.3 | 16.1 | 13.2 | 7.7 | -4.0 | -6.8 | -5.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.5 | 11.9 | 13.5 | 14.8 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 5.8 | 7.5 | 7.2 | 9.7 | 12.1 | 12.5 | 13.7 | 11.6 | 10.2 | 8.4 | 6.4 | 4.0 |
| Precipitation (mm) | 34 | 9 | 108 | 31 | 55 | 33 | 0 | 31 | 12 | 15 | 36 | 45 |
| Sunny days | 16 | 17 | 7 | 12 | 17 | 15 | 31 | 21 | 24 | 22 | 21 | 16 |
| Rainy days | 11 | 6 | 15 | 18 | 14 | 15 | 0 | 10 | 6 | 9 | 8 | 10 |
| Snow days | 4 | 5 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit Ontario Heights during the most sunny months:
Months with the longest average daylight duration in Ontario Heights:
The largest precipitation sum in Ontario Heights is at