US Geography / US Weather / Montana Weather / Shelby |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 31 | 38 | 45 | 57 | 66 | 74 | 81 | 81 | 70 | 61 | 44 | 34 |
| Avg. Low | 7 | 12 | 18 | 28 | 37 | 45 | 48 | 48 | 38 | 30 | 17 | 8 |
| Mean | 18 | 25 | 32 | 44 | 52 | 60 | 66 | 65 | 55 | 46 | 31 | 21 |
| Avg. Precip. | 0.5 in | 0.3 in | 0.7 in | 1.0 in | 2.1 in | 2.3 in | 1.3 in | 1.4 in | 1.1 in | 0.5 in | 0.5 in | 0.5 in |
Degrees in Fahrenheit
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