US Geography / US Weather / Washington Weather / Dupont |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 44 | 48 | 54 | 58 | 65 | 70 | 75 | 75 | 70 | 58 | 50 | 45 |
| Avg. Low | 34 | 36 | 37 | 38 | 44 | 48 | 52 | 54 | 48 | 44 | 38 | 35 |
| Mean | 40 | 44 | 45 | 48 | 55 | 60 | 64 | 65 | 60 | 52 | 45 | 40 |
| Avg. Precip. | 7.9 in | 6.4 in | 5.7 in | 3.3 in | 2.1 in | 1.6 in | 1.0 in | 1.3 in | 2.3 in | 4.5 in | 8.3 in | 8.4 in |
Degrees in Fahrenheit
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