US Geography / US Weather / Missouri Weather / Helena |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 32 | 38 | 51 | 64 | 74 | 82 | 87 | 84 | 76 | 66 | 51 | 36 |
| Avg. Low | 11 | 16 | 28 | 40 | 51 | 60 | 65 | 62 | 54 | 42 | 30 | 17 |
| Mean | 22 | 28 | 40 | 52 | 64 | 71 | 76 | 74 | 66 | 55 | 41 | 27 |
| Avg. Precip. | 1.1 in | 1.0 in | 2.4 in | 3.1 in | 4.5 in | 4.5 in | 3.9 in | 4.3 in | 5.1 in | 3.0 in | 1.8 in | 1.4 in |
Degrees in Fahrenheit
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