US Geography / US Weather / Washington Weather / Walla Walla |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 38 | 46 | 55 | 62 | 70 | 80 | 88 | 87 | 77 | 64 | 48 | 40 |
| Avg. Low | 28 | 34 | 37 | 41 | 47 | 54 | 60 | 61 | 52 | 44 | 35 | 28 |
| Mean | 34 | 40 | 46 | 52 | 58 | 68 | 75 | 75 | 65 | 54 | 44 | 35 |
| Avg. Precip. | 2.3 in | 1.8 in | 2.1 in | 1.7 in | 1.6 in | 1.0 in | 0.6 in | 0.8 in | 1.0 in | 1.6 in | 2.6 in | 2.5 in |
Degrees in Fahrenheit
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