Prospect Heights Weather Forecast

    • 67
    • 83

    Thunderstorms Likely

    • 65
    • 80

    Chance Thunderstorms

    • 64
    • 80

    Partly Sunny

    • 67
    • 85

    Partly Sunny

    • 70
    • 88

    Chance Rain Showers

    • 67
    • 87

    Chance Thunderstorms

Today 4 Jul Northern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms in the morning. Showers and Thunderstorms likely in the afternoon. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Temperature falling into the mid 70s in the afternoon. Northwest Winds around 5 Mph, becoming east in the afternoon. Chance of precipitation 70 percent.

Tonight 4 Jul Northern Cook

Mostly cloudy. A chance of Showers and Thunderstorms, mainly in the evening. Lows in the upper 60s. North Winds around 5 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Heights Temperature Statistics

July Temperature

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

  • Lowest 1 July, 2026

    80.1 °F
  • Average July

    86.8 °F
  • Highest 1 July, 2026

    93.9 °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

    61.5 °F
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