WeatherWX.com
Harper Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 60°F Lo 41°F | Hi 63°F Lo 44°F | Hi 71°F Lo 51°F | Hi 78°F Lo 57°F | Hi 83°F Lo 64°F | Hi 90°F Lo 69°F | Hi 93°F Lo 71°F | Hi 93°F Lo 72°F | Hi 87°F Lo 68°F | Hi 79°F Lo 59°F | Hi 67°F Lo 49°F | Hi 61°F Lo 43°F |
| 9 mph | 10 mph | 11 mph | 11 mph | 11 mph | 10 mph | 9 mph | 8 mph | 8 mph | 9 mph | 10 mph | 10 mph |
| 0.6 in | 0.6 in | 0.8 in | 1.1 in | 1.8 in | 0.7 in | 0.7 in | 0.7 in | 1.4 in | 1.1 in | 0.7 in | 0.6 in |
| 62% | 65% | 67% | 67% | 73% | 68% | 63% | 60% | 67% | 65% | 68% | 67% |
| 32% | 37% | 41% | 41% | 46% | 36% | 30% | 26% | 36% | 32% | 37% | 36% |
| 30.1 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 28 | 25 | 28 | 26 | 24 | 26 | 27 | 27 | 25 | 28 | 27 | 28 |
| 3 | 3 | 3 | 4 | 7 | 4 | 4 | 4 | 5 | 3 | 3 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 4 | 4 | 3 |
| 80 | 62 | 64 | 60 | 53 | 64 | 79 | 88 | 67 | 75 | 68 | 72 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 16°C Lo 5°C | Hi 17°C Lo 7°C | Hi 22°C Lo 10°C | Hi 25°C Lo 14°C | Hi 28°C Lo 18°C | Hi 32°C Lo 21°C | Hi 34°C Lo 22°C | Hi 34°C Lo 22°C | Hi 30°C Lo 20°C | Hi 26°C Lo 15°C | Hi 20°C Lo 10°C | Hi 16°C Lo 6°C |
| 15 km/h | 16 km/h | 18 km/h | 18 km/h | 17 km/h | 16 km/h | 15 km/h | 13 km/h | 12 km/h | 15 km/h | 16 km/h | 15 km/h |
| 16 mm | 15 mm | 21 mm | 29 mm | 46 mm | 18 mm | 19 mm | 19 mm | 34 mm | 27 mm | 17 mm | 15 mm |
| 62% | 65% | 67% | 67% | 73% | 68% | 63% | 60% | 67% | 65% | 68% | 67% |
| 32% | 37% | 41% | 41% | 46% | 36% | 30% | 26% | 36% | 32% | 37% | 36% |
| 1021 mb | 1018 mb | 1016 mb | 1013 mb | 1012 mb | 1012 mb | 1014 mb | 1013 mb | 1014 mb | 1016 mb | 1019 mb | 1019 mb |
| 28 | 25 | 28 | 26 | 24 | 26 | 27 | 27 | 25 | 28 | 27 | 28 |
| 3 | 3 | 3 | 4 | 7 | 4 | 4 | 4 | 5 | 3 | 3 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 4 | 4 | 3 |
| 80 | 62 | 64 | 60 | 53 | 64 | 79 | 88 | 67 | 75 | 68 | 72 |
| 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.