Prospect Heights Weather Forecast

    • 46
    • 63

    Sunny

    • 44
    • 72

    Mostly Sunny

    • 53
    • 71

    Sunny

    • 59
    • 78

    Partly Sunny

    • 59
    • 76

    Chance Rain Showers

    • 60
    • 78

    Slight Chance Thunderstorms

Today 9 May Northern Cook

Sunny. Highs in the mid 60s Inland, but only in the mid 50s near the lake. Northeast Winds 5 to 10 Mph.

Tonight 9 May Northern Cook

Mostly clear. Lows in the mid 40s. South Winds 5 to 10 Mph, becoming southwest after midnight.

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Prospect Heights Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2025

    44.7 °F

  • Average May

    54.6 °F

  • Highest 6 May, 2025

    77.6 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    61.5 °F
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