Weather World
St. Clairsville Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 32°F Lo 19°F | Hi 36°F Lo 22°F | Hi 46°F Lo 29°F | Hi 57°F Lo 39°F | Hi 67°F Lo 49°F | Hi 75°F Lo 57°F | Hi 81°F Lo 62°F | Hi 79°F Lo 60°F | Hi 72°F Lo 54°F | Hi 60°F Lo 44°F | Hi 47°F Lo 33°F | Hi 38°F Lo 26°F |
| 9 mph | 9 mph | 8 mph | 8 mph | 6 mph | 6 mph | 5 mph | 5 mph | 5 mph | 7 mph | 8 mph | 8 mph |
| 3.1 in | 3.5 in | 3.7 in | 5.1 in | 5.9 in | 5.5 in | 4.6 in | 3.6 in | 5.1 in | 4.4 in | 2.9 in | 4.2 in |
| 82% | 83% | 78% | 77% | 80% | 78% | 77% | 78% | 79% | 80% | 78% | 83% |
| 63% | 61% | 55% | 53% | 51% | 43% | 40% | 41% | 43% | 47% | 47% | 61% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.1 in | 30.1 in |
| 16 | 14 | 20 | 19 | 20 | 20 | 21 | 22 | 23 | 24 | 22 | 18 |
| 10 | 9 | 8 | 10 | 11 | 10 | 10 | 9 | 7 | 7 | 6 | 9 |
| 6 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 89 | 92 | 131 | 134 | 154 | 178 | 199 | 196 | 185 | 162 | 157 | 97 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -0°C Lo -7°C | Hi 2°C Lo -6°C | Hi 8°C Lo -1°C | Hi 14°C Lo 4°C | Hi 20°C Lo 10°C | Hi 24°C Lo 14°C | Hi 27°C Lo 17°C | Hi 26°C Lo 16°C | Hi 22°C Lo 12°C | Hi 16°C Lo 7°C | Hi 8°C Lo 0°C | Hi 3°C Lo -3°C |
| 14 km/h | 14 km/h | 14 km/h | 13 km/h | 10 km/h | 10 km/h | 8 km/h | 8 km/h | 8 km/h | 11 km/h | 12 km/h | 13 km/h |
| 77 mm | 90 mm | 95 mm | 129 mm | 150 mm | 139 mm | 117 mm | 92 mm | 130 mm | 111 mm | 73 mm | 106 mm |
| 82% | 83% | 78% | 77% | 80% | 78% | 77% | 78% | 79% | 80% | 78% | 83% |
| 63% | 61% | 55% | 53% | 51% | 43% | 40% | 41% | 43% | 47% | 47% | 61% |
| 1019 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1017 mb | 1020 mb | 1020 mb |
| 16 | 14 | 20 | 19 | 20 | 20 | 21 | 22 | 23 | 24 | 22 | 18 |
| 10 | 9 | 8 | 10 | 11 | 10 | 10 | 9 | 7 | 7 | 6 | 9 |
| 6 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 89 | 92 | 131 | 134 | 154 | 178 | 199 | 196 | 185 | 162 | 157 | 97 |
| 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.