Weather in Arlington Heights, Illinois, United States
Historical monthly conditions · 2021–2025
Monthly averages
Average daily air-temperature lows/highs and peak wind gusts. Rain is the average monthly total.
| Month | Avg low | Avg high | Rain | Cloud cover | Avg peak gust |
|---|---|---|---|---|---|
| January | -7°C | -1°C | 66.0 mm | 72% | 39.8 km/h |
| February | -6°C | 2°C | 47.5 mm | 60% | 43.0 km/h |
| March | 1°C | 9°C | 94.5 mm | 64% | 46.7 km/h |
| April | 5°C | 14°C | 88.5 mm | 63% | 46.0 km/h |
| May | 11°C | 20°C | 95.6 mm | 61% | 39.6 km/h |
| June | 17°C | 26°C | 101.7 mm | 50% | 39.3 km/h |
| July | 19°C | 27°C | 96.7 mm | 53% | 33.7 km/h |
| August | 18°C | 27°C | 73.0 mm | 50% | 34.5 km/h |
| September | 15°C | 24°C | 59.5 mm | 45% | 34.2 km/h |
| October | 9°C | 18°C | 85.6 mm | 49% | 40.5 km/h |
| November | 2°C | 10°C | 51.7 mm | 59% | 42.7 km/h |
| December | -3°C | 4°C | 62.2 mm | 73% | 42.1 km/h |
Weather match by month
Feels like 15°C–30°C · cloud ≤60% · rain ≤0.1 mm/h · gust ≤50 km/h
Feels-like temperature accounts for humidity and wind in shade. Percentages cover 08:00–20:00 local solar time.
| Month | Match rate | |
|---|---|---|
| January | 0.0% | |
| February | 0.2% | |
| March | 0.4% | |
| April | 5.9% | |
| May | 18.5% | |
| June | 38.0% | |
| July | 37.5% | |
| August | 39.8% | |
| September | 48.8% | |
| October | 16.3% | |
| November | 1.9% | |
| December | 0.0% |
About this location and data
- Urban-centre population
- 298,081
- Elevation
- 220 m
- Coordinates
- 42.09°N, 87.96°W
- Urban area
- 141 km²
Weather averages use 3 ERA5 grid cells, weighted by the area of the urban centre in each cell.
2021-2025 recent-weather sample (not a 30-year normal).
How the weather scores are calculatedNearby places with higher scores
Annual results for the default weather criteria: