Prospect Heights Weather Forecast

    • 70
    • 81

    Slight Chance Rain Showers

    • 72
    • 88

    Slight Chance Thunderstorms

    • 76
    • 90

    Slight Chance Thunderstorms

    • 75
    • 91

    Slight Chance Thunderstorms

    • 73
    • 91

    Chance Rain Showers

    • 72
    • 88

    Chance Rain Showers

Today 29 Aug Northern Cook

Mostly cloudy. Highs around 80. Southwest Winds 5 to 10 Mph.

Tonight 29 Aug Northern Cook

Mostly cloudy. A slight chance of Showers late. Lows in the upper 60s. South Winds 10 to 15 Mph. Chance of precipitation 20 percent.

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Prospect Heights Temperature Statistics

August Temperature

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

  • Lowest 25 August, 2026

    55.9 °F

  • Average August

    73.2 °F

  • Highest 7 August, 2026

    87.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
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