Mount Prospect Weather Forecast

    • 71
    • 86

    Chance Rain Showers

    • 65
    • 80

    Rain Showers

    • 59
    • 78

    Mostly Sunny

    • 65
    • 81

    Partly Sunny

    • 63
    • 84

    Chance Rain Showers

    • 64
    • 81

    Chance Rain Showers

Today 8 Sep Northern Cook

Mostly cloudy. A slight chance of Showers. Near steady temperature in the lower 80s. South Winds around 10 Mph. Chance of precipitation 20 percent.

Tonight 8 Sep Northern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. A chance of Showers and Thunderstorms late. Lows in the lower 70s. Southwest Winds around 10 Mph. Chance of precipitation 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Prospect Temperature Statistics

September Temperature

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

  • Lowest 6 September, 2026

    64 °F

  • Average September

    80.4 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

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

  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.6 °F
Get WillyWeather+ to remove ads