Prospect Heights Weather Forecast

    • 72
    • 81

    Decreasing Clouds

    • 78
    • 92

    Chance Thunderstorms

    • 71
    • 93

    Chance Thunderstorms

    • 66
    • 84

    Partly Sunny

    • 67
    • 85

    Slight Chance Thunderstorms

    • 69
    • 87

    Slight Chance Thunderstorms

Today 25 Jul Northern Cook

Mostly cloudy. Highs in the upper 70s. Southwest Winds 5 to 10 Mph.

Tonight 25 Jul Northern Cook

Mostly cloudy. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

July Temperature

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

  • Lowest 23 July, 2026

    55 °F

  • Average July

    76.8 °F

  • Highest 14 July, 2026

    97.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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