Prospect Heights Weather Forecast

    • 66
    • 83

    Becoming Sunny

    • 66
    • 85

    Mostly Sunny

    • 71
    • 91

    Sunny

    • 74
    • 94

    Sunny

    • 71
    • 93

    Mostly Sunny

    • 70
    • 89

    Partly Sunny

Today 11 Jul Northern Cook

Decreasing cloudiness. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northeast Winds 5 to 10 Mph.

Tonight 11 Jul Northern Cook

Mostly clear. 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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