Weather World
Postville High School Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 24°F Lo 10°F | Hi 28°F Lo 13°F | Hi 43°F Lo 28°F | Hi 55°F Lo 38°F | Hi 66°F Lo 49°F | Hi 76°F Lo 60°F | Hi 80°F Lo 63°F | Hi 79°F Lo 61°F | Hi 73°F Lo 54°F | Hi 58°F Lo 42°F | Hi 44°F Lo 30°F | Hi 31°F Lo 19°F |
| 10 mph | 10 mph | 10 mph | 11 mph | 9 mph | 8 mph | 7 mph | 7 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 1.5 in | 1.6 in | 3.5 in | 6.2 in | 5.7 in | 7.2 in | 5.1 in | 4.8 in | 3.9 in | 4.5 in | 2.8 in | 2.4 in |
| 87% | 86% | 79% | 76% | 80% | 82% | 82% | 79% | 77% | 72% | 76% | 83% |
| 62% | 59% | 56% | 53% | 47% | 40% | 36% | 33% | 34% | 42% | 46% | 60% |
| 30.1 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 19 | 18 | 21 | 19 | 22 | 21 | 24 | 24 | 25 | 25 | 23 | 19 |
| 7 | 6 | 6 | 9 | 9 | 9 | 7 | 7 | 5 | 6 | 5 | 7 |
| 5 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 0 | 1 | 2 |
| 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 102 | 102 | 131 | 130 | 154 | 175 | 204 | 233 | 215 | 182 | 171 | 122 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -5°C Lo -12°C | Hi -2°C Lo -10°C | Hi 6°C Lo -2°C | Hi 13°C Lo 3°C | Hi 19°C Lo 10°C | Hi 25°C Lo 15°C | Hi 27°C Lo 17°C | Hi 26°C Lo 16°C | Hi 23°C Lo 12°C | Hi 15°C Lo 6°C | Hi 7°C Lo -1°C | Hi -1°C Lo -7°C |
| 16 km/h | 16 km/h | 17 km/h | 17 km/h | 15 km/h | 13 km/h | 11 km/h | 12 km/h | 13 km/h | 16 km/h | 16 km/h | 16 km/h |
| 37 mm | 41 mm | 89 mm | 159 mm | 144 mm | 182 mm | 130 mm | 121 mm | 99 mm | 115 mm | 70 mm | 60 mm |
| 87% | 86% | 79% | 76% | 80% | 82% | 82% | 79% | 77% | 72% | 76% | 83% |
| 62% | 59% | 56% | 53% | 47% | 40% | 36% | 33% | 34% | 42% | 46% | 60% |
| 1020 mb | 1020 mb | 1018 mb | 1014 mb | 1014 mb | 1012 mb | 1014 mb | 1015 mb | 1016 mb | 1016 mb | 1018 mb | 1019 mb |
| 19 | 18 | 21 | 19 | 22 | 21 | 24 | 24 | 25 | 25 | 23 | 19 |
| 7 | 6 | 6 | 9 | 9 | 9 | 7 | 7 | 5 | 6 | 5 | 7 |
| 5 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 0 | 1 | 2 |
| 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 102 | 102 | 131 | 130 | 154 | 175 | 204 | 233 | 215 | 182 | 171 | 122 |
| 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.