Prospect Heights Weather Forecast
- 66
- 90
Chance Thunderstorms
- 66
- 81
Patchy Smoke
- 71
- 87
Rain Showers Likely
- 62
- 85
Slight Chance Thunderstorms
- 61
- 79
Mostly Sunny
- 64
- 82
Partly Sunny
Today 18 Jul Northern Cook
Partly cloudy. A chance of Showers and Thunderstorms in the late morning and early afternoon. A slight chance of Showers and Thunderstorms late. Highs in the upper 80s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north in the afternoon. Chance of precipitation 50 percent.
Tonight 18 Jul Northern Cook
Mostly clear. Patchy smoke. 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
78.1 °FHighest 14 July, 2026
97 °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