US Geography / US Weather / Idaho Weather / Lewiston |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 38 | 46 | 54 | 61 | 70 | 78 | 88 | 88 | 77 | 64 | 48 | 40 |
| Avg. Low | 27 | 31 | 34 | 38 | 46 | 54 | 58 | 58 | 50 | 41 | 34 | 28 |
| Mean | 34 | 38 | 44 | 51 | 58 | 67 | 74 | 74 | 64 | 52 | 41 | 35 |
| Avg. Precip. | 1.3 in | 0.9 in | 1.1 in | 1.1 in | 1.3 in | 1.3 in | 0.7 in | 0.8 in | 0.8 in | 0.9 in | 1.3 in | 1.3 in |
Degrees in Fahrenheit
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