Prospect Heights Weather Forecast

    • 42
    • 61

    Becoming Sunny

    • 50
    • 66

    Rain Showers

    • 58
    • 79

    Rain Showers

    • 58
    • 86

    Thunderstorms

    • 63
    • 81

    Thunderstorms

    • 60
    • 86

    Thunderstorms

Today 13 May Northern Cook

Mostly cloudy. Highs in the lower 60s Inland, but only in the mid 50s near the lake. North Winds 15 to 20 Mph with Gusts up to 25 Mph.

Tonight 13 May Northern Cook

Mostly clear. Lows in the lower 40s. North Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    52.2 °F

  • Highest 4 May, 2026

    81.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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