Weather World
Captain William Clark Historical Marker Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 31°F Lo 16°F | Hi 30°F Lo 14°F | Hi 42°F Lo 24°F | Hi 48°F Lo 30°F | Hi 59°F Lo 40°F | Hi 70°F Lo 49°F | Hi 81°F Lo 56°F | Hi 79°F Lo 56°F | Hi 70°F Lo 48°F | Hi 53°F Lo 34°F | Hi 40°F Lo 24°F | Hi 30°F Lo 16°F |
| 10 mph | 9 mph | 8 mph | 8 mph | 7 mph | 7 mph | 6 mph | 6 mph | 7 mph | 8 mph | 9 mph | 9 mph |
| 0.8 in | 1.3 in | 1.8 in | 3 in | 4.3 in | 3.1 in | 1 in | 1.3 in | 2.2 in | 2.1 in | 1.2 in | 1.2 in |
| 77% | 79% | 74% | 68% | 66% | 59% | 47% | 46% | 49% | 62% | 70% | 75% |
| 38% | 43% | 40% | 42% | 40% | 28% | 18% | 19% | 22% | 30% | 32% | 38% |
| 30.2 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.1 in | 30.1 in |
| 22 | 16 | 19 | 16 | 19 | 21 | 25 | 25 | 25 | 23 | 20 | 20 |
| 6 | 8 | 7 | 9 | 11 | 9 | 6 | 6 | 4 | 6 | 6 | 6 |
| 4 | 5 | 6 | 5 | 1 | 0 | 0 | 0 | 1 | 2 | 4 | 4 |
| 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 2 | 4 | 5 | 6 | 5 | 3 | 2 | 1 | 2 |
| 204 | 164 | 200 | 181 | 184 | 238 | 290 | 301 | 277 | 238 | 233 | 213 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -1°C Lo -9°C | Hi -1°C Lo -10°C | Hi 5°C Lo -4°C | Hi 9°C Lo -1°C | Hi 15°C Lo 5°C | Hi 21°C Lo 9°C | Hi 27°C Lo 14°C | Hi 26°C Lo 13°C | Hi 21°C Lo 9°C | Hi 11°C Lo 1°C | Hi 4°C Lo -5°C | Hi -1°C Lo -9°C |
| 15 km/h | 14 km/h | 13 km/h | 13 km/h | 11 km/h | 11 km/h | 10 km/h | 10 km/h | 11 km/h | 13 km/h | 14 km/h | 15 km/h |
| 21 mm | 33 mm | 46 mm | 77 mm | 110 mm | 78 mm | 25 mm | 32 mm | 55 mm | 53 mm | 30 mm | 29 mm |
| 77% | 79% | 74% | 68% | 66% | 59% | 47% | 46% | 49% | 62% | 70% | 75% |
| 38% | 43% | 40% | 42% | 40% | 28% | 18% | 19% | 22% | 30% | 32% | 38% |
| 1022 mb | 1020 mb | 1016 mb | 1014 mb | 1013 mb | 1012 mb | 1013 mb | 1014 mb | 1013 mb | 1012 mb | 1018 mb | 1020 mb |
| 22 | 16 | 19 | 16 | 19 | 21 | 25 | 25 | 25 | 23 | 20 | 20 |
| 6 | 8 | 7 | 9 | 11 | 9 | 6 | 6 | 4 | 6 | 6 | 6 |
| 4 | 5 | 6 | 5 | 1 | 0 | 0 | 0 | 1 | 2 | 4 | 4 |
| 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 2 | 4 | 5 | 6 | 5 | 3 | 2 | 1 | 2 |
| 204 | 164 | 200 | 181 | 184 | 238 | 290 | 301 | 277 | 238 | 233 | 213 |
| 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.