Mount Prospect Weather Forecast

    • 64
    • 75

    Slight Chance Rain Showers

    • 62
    • 71

    Rain Showers

    • 63
    • 72

    Rain Showers

    • 57
    • 69

    Rain Showers Likely

    • 55
    • 65

    Chance Rain Showers

    • 56
    • 67

    Mostly Cloudy

Today 17 Sep Northern Cook

Partly cloudy in the Morning, then becoming mostly cloudy. Highs in the upper 60s.

Tonight 17 Sep Northern Cook

Mostly cloudy. A slight chance of Showers or patchy drizzle in the evening. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of precipitation 20 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 14 September, 2026

    50 °F

  • Average September

    74 °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