WeatherWX.com
Arlington Heights Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 29°F Lo 18°F | Hi 32°F Lo 19°F | Hi 45°F Lo 31°F | Hi 55°F Lo 40°F | Hi 67°F Lo 51°F | Hi 77°F Lo 61°F | Hi 81°F Lo 67°F | Hi 80°F Lo 66°F | Hi 74°F Lo 59°F | Hi 61°F Lo 47°F | Hi 47°F Lo 35°F | Hi 36°F Lo 26°F |
| 10 mph | 10 mph | 9 mph | 10 mph | 8 mph | 7 mph | 7 mph | 6 mph | 8 mph | 9 mph | 10 mph | 9 mph |
| 0.8 in | 0.9 in | 1.1 in | 1.9 in | 2.1 in | 2.1 in | 1.6 in | 1.6 in | 1.1 in | 1.6 in | 0.8 in | 0.9 in |
| 82% | 82% | 74% | 73% | 75% | 75% | 75% | 73% | 71% | 69% | 71% | 78% |
| 62% | 59% | 51% | 51% | 44% | 35% | 31% | 30% | 30% | 43% | 43% | 57% |
| 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 |
| 20 | 18 | 22 | 22 | 22 | 22 | 24 | 24 | 25 | 25 | 25 | 22 |
| 8 | 7 | 7 | 8 | 9 | 8 | 7 | 7 | 5 | 6 | 4 | 6 |
| 4 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 2 | 1 | 1 |
| 38 | 38 | 49 | 47 | 61 | 70 | 80 | 79 | 77 | 61 | 59 | 43 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -2°C Lo -8°C | Hi -0°C Lo -7°C | Hi 7°C Lo -1°C | Hi 13°C Lo 4°C | Hi 19°C Lo 11°C | Hi 25°C Lo 16°C | Hi 27°C Lo 19°C | Hi 27°C Lo 19°C | Hi 23°C Lo 15°C | Hi 16°C Lo 9°C | Hi 8°C Lo 2°C | Hi 2°C Lo -4°C |
| 15 km/h | 16 km/h | 15 km/h | 15 km/h | 13 km/h | 12 km/h | 11 km/h | 10 km/h | 12 km/h | 14 km/h | 15 km/h | 15 km/h |
| 20 mm | 24 mm | 29 mm | 48 mm | 54 mm | 54 mm | 40 mm | 40 mm | 29 mm | 39 mm | 21 mm | 22 mm |
| 82% | 82% | 74% | 73% | 75% | 75% | 75% | 73% | 71% | 69% | 71% | 78% |
| 62% | 59% | 51% | 51% | 44% | 35% | 31% | 30% | 30% | 43% | 43% | 57% |
| 1019 mb | 1019 mb | 1019 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1016 mb | 1019 mb | 1019 mb |
| 20 | 18 | 22 | 22 | 22 | 22 | 24 | 24 | 25 | 25 | 25 | 22 |
| 8 | 7 | 7 | 8 | 9 | 8 | 7 | 7 | 5 | 6 | 4 | 6 |
| 4 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 2 | 1 | 1 |
| 38 | 38 | 49 | 47 | 61 | 70 | 80 | 79 | 77 | 61 | 59 | 43 |
| 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.