Prospect Heights Weather Forecast

    • 50
    • 68

    Partly Sunny

    • 52
    • 70

    Partly Sunny

    • 54
    • 72

    Mostly Sunny

    • 61
    • 73

    Rain Showers Likely

    • 61
    • 70

    Rain Showers Likely

    • 58
    • 70

    Chance Rain Showers

Today 26 Sep Northern Cook

Mostly sunny. Highs in the upper 60s. East Winds 5 to 10 Mph.

Tonight 26 Sep Northern Cook

Partly cloudy. Lows around 50. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Heights Temperature Statistics

September Temperature

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

  • Lowest 14 September, 2026

    50.6 °F

  • Average September

    71 °F

  • Highest 2 September, 2026

    96.7 °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

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
Get WillyWeather+ to remove ads