Arlington Heights Weather Forecast

    • 70
    • 79

    Decreasing Clouds

    • 74
    • 92

    Chance Thunderstorms

    • 70
    • 92

    Chance Thunderstorms

    • 63
    • 84

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 67
    • 86

    Slight Chance Thunderstorms

    • 68
    • 86

    Chance Rain Showers

Today 25 Jul Northern Cook

Cloudy. Temperatures in the upper 70s. Southwest Winds around 10 Mph.

Tonight 25 Jul Northern Cook

Mostly cloudy. Patchy fog late. Lows around 70. Southwest Winds 5 to 10 Mph.

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Arlington Heights Temperature Statistics

July Temperature

Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)

  • Lowest 23 July, 2026

    55 °F

  • Average July

    76.8 °F

  • Highest 14 July, 2026

    97.6 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (4.3 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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