Prospect Heights Weather Forecast

    • 65
    • 81

    Mostly Cloudy

    • 66
    • 83

    Partly Sunny

    • 68
    • 86

    Mostly Sunny

    • 70
    • 90

    Sunny

    • 74
    • 93

    Mostly Sunny

    • 72
    • 92

    Partly Sunny

    • 70
    • 89

    Slight Chance Thunderstorms

Today 10 Jul Northern Cook

Partly cloudy early in the Afternoon, then becoming mostly cloudy. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northeast Winds around 10 Mph.

Tonight 10 Jul Northern Cook

Mostly cloudy. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

July Temperature

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

  • Lowest 7 July, 2026

    62.7 °F

  • Average July

    77.8 °F

  • Highest 1 July, 2026

    95.6 °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

    52.8 °F

  • Average High 2021–2026

    61.6 °F
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