Prospect Heights Weather Forecast
- 65
- 81
Mostly Cloudy
- 66
- 83
Partly Sunny
- 68
- 86
Mostly Sunny
- 70
- 90
Sunny
- 74
- 93
Mostly Sunny
- 72
- 92
Partly Sunny
- 70
- 89
Slight Chance Thunderstorms
Today 10 Jul Northern Cook
Partly cloudy early in the Afternoon, then becoming mostly cloudy. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northeast Winds around 10 Mph.
Tonight 10 Jul Northern Cook
Mostly cloudy. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.
Prospect Heights Temperature Statistics
July Temperature
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Lowest 7 July, 2026
62.7 °FAverage July
77.8 °FHighest 1 July, 2026
95.6 °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