Weather World
Boulder Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 24°F Lo 6°F | Hi 27°F Lo 8°F | Hi 35°F Lo 17°F | Hi 45°F Lo 27°F | Hi 57°F Lo 37°F | Hi 71°F Lo 46°F | Hi 80°F Lo 54°F | Hi 77°F Lo 53°F | Hi 69°F Lo 45°F | Hi 51°F Lo 32°F | Hi 37°F Lo 20°F | Hi 25°F Lo 8°F |
| 6 mph | 6 mph | 7 mph | 8 mph | 8 mph | 8 mph | 7 mph | 7 mph | 7 mph | 7 mph | 6 mph | 6 mph |
| 0.6 in | 0.7 in | 1.2 in | 1.7 in | 2.2 in | 1.1 in | 0.7 in | 1 in | 1.2 in | 1.4 in | 0.7 in | 0.8 in |
| 86% | 85% | 77% | 62% | 52% | 41% | 35% | 35% | 39% | 55% | 69% | 82% |
| 38% | 42% | 39% | 35% | 31% | 19% | 16% | 17% | 17% | 24% | 29% | 38% |
| 30.3 in | 30.2 in | 30.1 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.2 in | 30.2 in |
| 22 | 19 | 19 | 18 | 21 | 25 | 26 | 26 | 26 | 26 | 23 | 21 |
| 6 | 7 | 7 | 8 | 9 | 5 | 5 | 5 | 4 | 4 | 5 | 7 |
| 3 | 3 | 5 | 4 | 2 | 0 | 0 | 0 | 0 | 2 | 3 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 2 | 2 | 1 | 2 | 3 | 4 | 5 | 5 | 3 | 2 | 2 | 1 |
| 205 | 161 | 195 | 212 | 232 | 283 | 310 | 310 | 298 | 267 | 246 | 210 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -4°C Lo -14°C | Hi -3°C Lo -13°C | Hi 2°C Lo -9°C | Hi 7°C Lo -3°C | Hi 14°C Lo 3°C | Hi 22°C Lo 8°C | Hi 27°C Lo 12°C | Hi 25°C Lo 12°C | Hi 21°C Lo 7°C | Hi 11°C Lo -0°C | Hi 3°C Lo -7°C | Hi -4°C Lo -13°C |
| 9 km/h | 10 km/h | 10 km/h | 13 km/h | 13 km/h | 13 km/h | 11 km/h | 11 km/h | 11 km/h | 11 km/h | 10 km/h | 9 km/h |
| 16 mm | 18 mm | 31 mm | 43 mm | 56 mm | 29 mm | 17 mm | 26 mm | 32 mm | 34 mm | 18 mm | 20 mm |
| 86% | 85% | 77% | 62% | 52% | 41% | 35% | 35% | 39% | 55% | 69% | 82% |
| 38% | 42% | 39% | 35% | 31% | 19% | 16% | 17% | 17% | 24% | 29% | 38% |
| 1026 mb | 1023 mb | 1018 mb | 1014 mb | 1013 mb | 1012 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1021 mb | 1024 mb |
| 22 | 19 | 19 | 18 | 21 | 25 | 26 | 26 | 26 | 26 | 23 | 21 |
| 6 | 7 | 7 | 8 | 9 | 5 | 5 | 5 | 4 | 4 | 5 | 7 |
| 3 | 3 | 5 | 4 | 2 | 0 | 0 | 0 | 0 | 2 | 3 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 2 | 2 | 1 | 2 | 3 | 4 | 5 | 5 | 3 | 2 | 2 | 1 |
| 205 | 161 | 195 | 212 | 232 | 283 | 310 | 310 | 298 | 267 | 246 | 210 |
| 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.