Prospect Heights Weather Forecast

    • 70
    • 81

    Chance Rain Showers

    • 72
    • 88

    Chance Rain Showers

    • 74
    • 90

    Mostly Cloudy

    • 74
    • 91

    Slight Chance Thunderstorms

    • 72
    • 90

    Chance Rain Showers

    • 69
    • 86

    Chance Rain Showers

Today 29 Aug Northern Cook

Mostly cloudy. A slight chance of Sprinkles early in the afternoon. A slight chance of Showers late. Highs around 80. Southwest Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 29 Aug Northern Cook

Mostly cloudy. A slight chance of Sprinkles early in the evening. A chance of Showers with a slight chance of Thunderstorms late. Lows in the upper 60s. South Winds 10 to 15 Mph. Chance of precipitation 30 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Heights Temperature Statistics

August Temperature

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

  • Lowest 25 August, 2026

    55.9 °F

  • Average August

    73.2 °F

  • Highest 7 August, 2026

    87.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
Get WillyWeather+ to remove ads