Mount Prospect Weather Forecast

    • 63
    • 82

    Becoming Sunny

    • 66
    • 87

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 59
    • 78

    Mostly Cloudy

    • 58
    • 76

    Partly Sunny

Today 25 May Northern Cook

Mostly sunny. Highs in the lower 80s Inland, but only in the upper 60s near the lake. South Winds 5 to 10 Mph.

Tonight 25 May Northern Cook

Clear. Lows in the lower 60s. South Winds 5 to 10 Mph.

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Mount Prospect Temperature Statistics

May Temperature

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    56.1 °F

  • Highest 17 May, 2026

    85.6 °F

Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (3.7 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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