Mount Prospect Weather Forecast

    • 65
    • 66

    Rain Showers

    • 56
    • 70

    Rain Showers

    • 50
    • 65

    Slight Chance Rain Showers

    • 49
    • 65

    Partly Sunny

    • 47
    • 67

    Mostly Sunny

    • 46
    • 62

    Mostly Sunny

Today 30 Sep Northern Cook

Showers with a slight chance of Thunderstorms. Near steady temperature in the mid 60s. Southwest Winds 10 to 15 Mph. Chance of precipitation near 100 percent.

Tonight 30 Sep Northern Cook

Showers. A slight chance of Thunderstorms in the late evening and overnight. Near steady temperature in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of precipitation 90 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 26 September, 2026

    47.6 °F

  • Average September

    69.6 °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

    61.5 °F
Get WillyWeather+ to remove ads