Weather World
Fort Dearborn Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 30°F Lo 21°F | Hi 33°F Lo 23°F | Hi 43°F Lo 33°F | Hi 52°F Lo 41°F | Hi 63°F Lo 51°F | Hi 73°F Lo 62°F | Hi 79°F Lo 68°F | Hi 78°F Lo 68°F | Hi 73°F Lo 62°F | Hi 61°F Lo 50°F | Hi 47°F Lo 38°F | Hi 37°F Lo 29°F |
| 12 mph | 11 mph | 11 mph | 11 mph | 9 mph | 8 mph | 8 mph | 8 mph | 9 mph | 11 mph | 12 mph | 11 mph |
| 2.4 in | 2.6 in | 3.8 in | 5.5 in | 6.4 in | 6.8 in | 5.2 in | 4.7 in | 3.7 in | 4.5 in | 3.1 in | 2.9 in |
| 81% | 81% | 75% | 75% | 78% | 77% | 77% | 74% | 72% | 70% | 72% | 78% |
| 62% | 58% | 51% | 50% | 43% | 35% | 33% | 30% | 32% | 42% | 45% | 59% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 18 | 17 | 21 | 21 | 21 | 20 | 22 | 23 | 24 | 24 | 24 | 22 |
| 8 | 7 | 7 | 9 | 10 | 10 | 9 | 8 | 6 | 7 | 6 | 7 |
| 5 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 |
| 1 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 4 | 2 | 1 | 1 |
| 108 | 115 | 144 | 144 | 185 | 219 | 230 | 242 | 225 | 174 | 167 | 119 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -1°C Lo -6°C | Hi 1°C Lo -5°C | Hi 6°C Lo 0°C | Hi 11°C Lo 5°C | Hi 17°C Lo 11°C | Hi 23°C Lo 17°C | Hi 26°C Lo 20°C | Hi 26°C Lo 20°C | Hi 23°C Lo 17°C | Hi 16°C Lo 10°C | Hi 9°C Lo 3°C | Hi 3°C Lo -2°C |
| 19 km/h | 18 km/h | 18 km/h | 18 km/h | 15 km/h | 14 km/h | 12 km/h | 13 km/h | 15 km/h | 18 km/h | 19 km/h | 18 km/h |
| 60 mm | 66 mm | 96 mm | 141 mm | 161 mm | 172 mm | 133 mm | 120 mm | 94 mm | 114 mm | 78 mm | 73 mm |
| 81% | 81% | 75% | 75% | 78% | 77% | 77% | 74% | 72% | 70% | 72% | 78% |
| 62% | 58% | 51% | 50% | 43% | 35% | 33% | 30% | 32% | 42% | 45% | 59% |
| 1019 mb | 1019 mb | 1018 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1016 mb | 1019 mb | 1019 mb |
| 18 | 17 | 21 | 21 | 21 | 20 | 22 | 23 | 24 | 24 | 24 | 22 |
| 8 | 7 | 7 | 9 | 10 | 10 | 9 | 8 | 6 | 7 | 6 | 7 |
| 5 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 |
| 1 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 4 | 2 | 1 | 1 |
| 108 | 115 | 144 | 144 | 185 | 219 | 230 | 242 | 225 | 174 | 167 | 119 |
| 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.