Prospect Heights Weather Forecast
- 65
- 83
Becoming Sunny
- 70
- 86
Rain Showers
- 68
- 85
Rain Showers
- 66
- 82
Rain Showers Likely
- 65
- 81
Chance Thunderstorms
- 62
- 78
Slight Chance Thunderstorms
Today 8 Aug Northern Cook
Partly cloudy in the morning then clearing. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northwest Winds 5 to 10 Mph.
Tonight 8 Aug Northern Cook
Clear in the Evening, then becoming partly cloudy. Lows in the mid 60s. Southwest Winds around 5 Mph.
Prospect Heights Temperature Statistics
August Temperature
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Lowest 3 August, 2026
61.6 °FAverage August
72.4 °FHighest 4 August, 2026
85.6 °F
Climate (2021–2026)
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Average Low 2021–2026
44 °FAverage 2021–2026
52.9 °FAverage High 2021–2026
61.6 °F