US Geography / US Weather / Iowa Weather / Mason City |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 22° | 27° | 40° | 57° | 70° | 78° | 84° | 80° | 72° | 60° | 42° | 26° |
| Avg. Low | 4° | 8° | 22° | 35° | 46° | 56° | 61° | 58° | 48° | 37° | 24° | 10° |
| Mean | 14° | 18° | 31° | 46° | 58° | 68° | 74° | 70° | 61° | 48° | 34° | 18° |
| Avg. Precip. | 0.9 in | 0.9 in | 2.0 in | 3.0 in | 4.1 in | 4.5 in | 4.3 in | 4.1 in | 3.8 in | 2.4 in | 1.6 in | 1.3 in |
Degrees in Fahrenheit
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