Arlington Heights Weather Forecast

    • 57
    • 75

    Becoming Sunny

    • 60
    • 78

    Partly Sunny

    • 65
    • 81

    Slight Chance Thunderstorms

    • 65
    • 83

    Chance Thunderstorms

    • 64
    • 81

    Slight Chance Thunderstorms

    • 64
    • 80

    Partly Sunny

Today 23 Aug Northern Cook

Sunny in the Morning, then becoming partly cloudy. Highs in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug Northern Cook

Mostly clear. Lows in the upper 50s. Northwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Arlington Heights Temperature Statistics

August Temperature

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

  • Lowest 20 August, 2026

    61 °F

  • Average August

    74 °F

  • Highest 7 August, 2026

    87.7 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.6 °F
Get WillyWeather+ to remove ads