Weather World
Westmoreland County Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 34°F Lo 20°F | Hi 38°F Lo 23°F | Hi 49°F Lo 31°F | Hi 59°F Lo 40°F | Hi 70°F Lo 50°F | Hi 77°F Lo 58°F | Hi 82°F Lo 62°F | Hi 80°F Lo 60°F | Hi 75°F Lo 55°F | Hi 62°F Lo 45°F | Hi 49°F Lo 34°F | Hi 40°F Lo 28°F |
| 9 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 5 mph | 7 mph | 7 mph | 8 mph |
| 3.9 in | 4.2 in | 4.3 in | 5.5 in | 6.2 in | 6.2 in | 5.4 in | 3.7 in | 4.6 in | 4.8 in | 3.6 in | 5 in |
| 85% | 84% | 78% | 77% | 79% | 78% | 78% | 77% | 78% | 79% | 78% | 83% |
| 71% | 67% | 57% | 53% | 49% | 44% | 41% | 40% | 40% | 46% | 50% | 67% |
| 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 |
| 12 | 11 | 19 | 18 | 19 | 19 | 19 | 22 | 23 | 23 | 21 | 16 |
| 12 | 11 | 9 | 11 | 12 | 11 | 12 | 9 | 7 | 8 | 7 | 11 |
| 7 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 2 | 1 |
| 69 | 75 | 122 | 130 | 159 | 172 | 196 | 203 | 193 | 163 | 148 | 83 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -7°C | Hi 4°C Lo -5°C | Hi 9°C Lo -1°C | Hi 15°C Lo 4°C | Hi 21°C Lo 10°C | Hi 25°C Lo 14°C | Hi 28°C Lo 17°C | Hi 27°C Lo 16°C | Hi 24°C Lo 13°C | Hi 17°C Lo 7°C | Hi 10°C Lo 1°C | Hi 4°C Lo -2°C |
| 14 km/h | 13 km/h | 13 km/h | 13 km/h | 10 km/h | 10 km/h | 8 km/h | 8 km/h | 9 km/h | 11 km/h | 12 km/h | 13 km/h |
| 99 mm | 107 mm | 108 mm | 140 mm | 157 mm | 158 mm | 137 mm | 94 mm | 118 mm | 123 mm | 92 mm | 128 mm |
| 85% | 84% | 78% | 77% | 79% | 78% | 78% | 77% | 78% | 79% | 78% | 83% |
| 71% | 67% | 57% | 53% | 49% | 44% | 41% | 40% | 40% | 46% | 50% | 67% |
| 1019 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1017 mb | 1020 mb | 1020 mb |
| 12 | 11 | 19 | 18 | 19 | 19 | 19 | 22 | 23 | 23 | 21 | 16 |
| 12 | 11 | 9 | 11 | 12 | 11 | 12 | 9 | 7 | 8 | 7 | 11 |
| 7 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 2 | 1 |
| 69 | 75 | 122 | 130 | 159 | 172 | 196 | 203 | 193 | 163 | 148 | 83 |
| 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.