WeatherWX.com
Irmo Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 53°F Lo 38°F | Hi 57°F Lo 41°F | Hi 64°F Lo 47°F | Hi 73°F Lo 54°F | Hi 81°F Lo 63°F | Hi 89°F Lo 70°F | Hi 92°F Lo 73°F | Hi 91°F Lo 72°F | Hi 85°F Lo 67°F | Hi 75°F Lo 56°F | Hi 63°F Lo 46°F | Hi 57°F Lo 42°F |
| 8 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 6 mph | 5 mph | 6 mph | 7 mph | 7 mph | 7 mph |
| 3.9 in | 4.7 in | 4.4 in | 4.5 in | 5.5 in | 4.3 in | 5.1 in | 5.2 in | 4.1 in | 3.8 in | 2.7 in | 4.6 in |
| 70% | 72% | 71% | 71% | 72% | 69% | 69% | 70% | 70% | 69% | 68% | 73% |
| 37% | 41% | 39% | 31% | 32% | 28% | 30% | 31% | 31% | 27% | 31% | 40% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 25 | 22 | 24 | 24 | 24 | 25 | 24 | 25 | 26 | 28 | 27 | 25 |
| 5 | 5 | 7 | 6 | 7 | 5 | 7 | 6 | 4 | 3 | 3 | 6 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 2 | 4 | 3 | 3 | 3 | 2 | 2 | 1 | 2 |
| 3 | 4 | 4 | 5 | 6 | 7 | 7 | 6 | 6 | 4 | 4 | 3 |
| 214 | 178 | 193 | 233 | 233 | 255 | 248 | 238 | 233 | 255 | 229 | 201 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 12°C Lo 3°C | Hi 14°C Lo 5°C | Hi 18°C Lo 8°C | Hi 23°C Lo 12°C | Hi 27°C Lo 17°C | Hi 32°C Lo 21°C | Hi 33°C Lo 23°C | Hi 33°C Lo 22°C | Hi 30°C Lo 19°C | Hi 24°C Lo 14°C | Hi 17°C Lo 8°C | Hi 14°C Lo 6°C |
| 13 km/h | 13 km/h | 13 km/h | 13 km/h | 11 km/h | 10 km/h | 10 km/h | 9 km/h | 10 km/h | 11 km/h | 11 km/h | 12 km/h |
| 100 mm | 119 mm | 110 mm | 114 mm | 140 mm | 109 mm | 130 mm | 133 mm | 105 mm | 98 mm | 70 mm | 118 mm |
| 70% | 72% | 71% | 71% | 72% | 69% | 69% | 70% | 70% | 69% | 68% | 73% |
| 37% | 41% | 39% | 31% | 32% | 28% | 30% | 31% | 31% | 27% | 31% | 40% |
| 1020 mb | 1020 mb | 1019 mb | 1017 mb | 1017 mb | 1015 mb | 1016 mb | 1016 mb | 1016 mb | 1017 mb | 1021 mb | 1021 mb |
| 25 | 22 | 24 | 24 | 24 | 25 | 24 | 25 | 26 | 28 | 27 | 25 |
| 5 | 5 | 7 | 6 | 7 | 5 | 7 | 6 | 4 | 3 | 3 | 6 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 2 | 4 | 3 | 3 | 3 | 2 | 2 | 1 | 2 |
| 3 | 4 | 4 | 5 | 6 | 7 | 7 | 6 | 6 | 4 | 4 | 3 |
| 214 | 178 | 193 | 233 | 233 | 255 | 248 | 238 | 233 | 255 | 229 | 201 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.
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