Arlington Heights Weather Forecast

    • 72
    • 86

    Chance Rain Showers

    • 75
    • 91

    Mostly Cloudy

    • 76
    • 92

    Partly Sunny

    • 72
    • 92

    Chance Rain Showers

    • 69
    • 86

    Slight Chance Thunderstorms

    • 69
    • 85

    Partly Sunny

Today 30 Aug Northern Cook

Mostly cloudy. Scattered Showers with a slight chance of Thunderstorms early in the morning. Scattered Showers with a slight chance of Thunderstorms in the afternoon. Breezy with Highs in the mid 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 30 percent.

Tonight 30 Aug Northern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms early in the evening. A slight chance of Showers and Thunderstorms late. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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 25 August, 2026

    55.9 °F

  • Average August

    73.2 °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

    43.9 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
Get WillyWeather+ to remove ads