US Geography / US Weather / California Weather / Ontario |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 67 | 68 | 70 | 75 | 80 | 87 | 94 | 94 | 90 | 84 | 74 | 68 |
| Avg. Low | 44 | 45 | 46 | 48 | 54 | 57 | 62 | 64 | 61 | 56 | 48 | 44 |
| Mean | 56 | 58 | 58 | 62 | 67 | 72 | 78 | 78 | 76 | 70 | 61 | 56 |
| Avg. Precip. | 3.3 in | 3.1 in | 2.9 in | 1.1 in | 0.3 in | 0.0 in | 0.0 in | 0.1 in | 0.4 in | 0.4 in | 1.9 in | 2.3 in |
Degrees in Fahrenheit
Copyright 2008 countrystudies.us