Arlington Heights Weather Forecast
- 56
- 75
Mostly Sunny
- 58
- 78
Mostly Sunny
- 59
- 80
Mostly Sunny
- 49
- 77
Rain Showers Likely
- 48
- 62
Mostly Cloudy
- 49
- 66
Slight Chance Rain Showers
Today 31 Aug Northern Cook
Mostly sunny. Highs in the upper 70s Inland, but only in the lower 70s near the lake. Northeast Winds 5 to 10 Mph.
Tonight 31 Aug Northern Cook
Mostly clear. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.
Arlington Heights Temperature Statistics
August Temperature
Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)
Lowest 2 August, 2025
58.6 °FAverage August
76.5 °FHighest 9 August, 2025
96.7 °F
Climate (2020–Present)
Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)
Average Low 2020–2025
44.2 °FAverage 2020–2025
53 °FAverage High 2020–2025
61.5 °F