US Geography / US Weather / Oregon Weather / Ontario |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 34 | 42 | 54 | 64 | 74 | 82 | 91 | 88 | 78 | 64 | 47 | 35 |
| Avg. Low | 17 | 24 | 30 | 37 | 45 | 52 | 58 | 55 | 46 | 35 | 28 | 20 |
| Mean | 26 | 34 | 42 | 50 | 58 | 68 | 75 | 74 | 62 | 50 | 38 | 28 |
| Avg. Precip. | 1.3 in | 0.9 in | 1.0 in | 0.7 in | 0.8 in | 0.8 in | 0.3 in | 0.5 in | 0.5 in | 0.6 in | 1.3 in | 1.4 in |
Degrees in Fahrenheit
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