US Geography / US Weather / Washington Weather / Chehalis |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 45 | 50 | 54 | 58 | 66 | 72 | 77 | 77 | 72 | 61 | 50 | 45 |
| Avg. Low | 34 | 35 | 36 | 38 | 44 | 48 | 52 | 52 | 48 | 42 | 38 | 34 |
| Mean | 38 | 44 | 46 | 50 | 55 | 61 | 65 | 65 | 60 | 52 | 45 | 40 |
| Avg. Precip. | 7.0 in | 5.3 in | 4.9 in | 3.3 in | 2.3 in | 1.9 in | 0.9 in | 1.3 in | 2.3 in | 4.0 in | 7.0 in | 7.3 in |
Degrees in Fahrenheit
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