Prospect Heights Weather Forecast

    • 55
    • 65

    Rain Showers

    • 55
    • 67

    Slight Chance Thunderstorms

    • 58
    • 74

    Partly Sunny

    • 62
    • 84

    Mostly Cloudy

    • 63
    • 86

    Mostly Cloudy

    • 63
    • 83

    Chance Rain Showers

Today 22 May Northern Cook

Mostly cloudy. Highs in the upper 60s Inland, but only around 60 near the lake. East Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 22 May Northern Cook

Mostly cloudy. A slight chance of Showers in the late evening and overnight. Lows in the mid 50s. East Winds 10 to 15 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Heights Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    56.4 °F

  • Highest 17 May, 2026

    85.6 °F

Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (2.5 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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