US Geography / US Weather / South Carolina Weather / Irmo |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 55 | 58 | 68 | 76 | 84 | 88 | 91 | 90 | 85 | 76 | 67 | 58 |
| Avg. Low | 32 | 34 | 42 | 48 | 58 | 66 | 70 | 68 | 64 | 50 | 41 | 34 |
| Mean | 44 | 47 | 55 | 64 | 71 | 77 | 81 | 80 | 74 | 64 | 55 | 47 |
| Avg. Precip. | 4.4 in | 4.1 in | 4.8 in | 3.3 in | 3.7 in | 4.8 in | 5.5 in | 6.1 in | 3.7 in | 3.0 in | 2.9 in | 3.6 in |
Degrees in Fahrenheit
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