Prospect Heights Weather Forecast

    • 60
    • 86

    Partly Sunny

    • 54
    • 73

    Chance Rain Showers

    • 66
    • 73

    Chance Thunderstorms

    • 63
    • 83

    Rain Showers

    • 63
    • 76

    Rain Showers Likely

    • 59
    • 76

    Slight Chance Thunderstorms

Today 12 Sep Northern Cook

Partly cloudy. Highs in the mid 80s. West Winds around 10 Mph.

Tonight 12 Sep Northern Cook

Partly cloudy in the Evening, then clearing. Less humid with Lows around 60. Northwest 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 7 September, 2026

    59.6 °F

  • Average September

    76.9 °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

    61.6 °F
Get WillyWeather+ to remove ads