Prospect Heights Weather Forecast
- 60
- 80
Slight Chance Thunderstorms
- 58
- 76
Mostly Sunny
- 61
- 77
Partly Sunny
- 65
- 80
Mostly Cloudy
- 65
- 83
Slight Chance Thunderstorms
- 65
- 82
Slight Chance Thunderstorms
Today 22 Aug Northern Cook
Mostly sunny in the Morning, then becoming partly cloudy. A slight chance of Thunderstorms with isolated Showers in the afternoon. Highs in the upper 70s. Northwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon. Chance of precipitation 20 percent.
Tonight 22 Aug Northern Cook
Mostly clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.
Prospect Heights Temperature Statistics
August Temperature
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Lowest 3 August, 2026
61.6 °FAverage August
74.2 °FHighest 7 August, 2026
87.7 °F
Climate (2021–2026)
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Average Low 2021–2026
44 °FAverage 2021–2026
52.8 °FAverage High 2021–2026
61.6 °F