Grandwood Park Weather Forecast

    • 68
    • 76

    Slight Chance Thunderstorms

    • 71
    • 87

    Thunderstorms Likely

    • 65
    • 85

    Chance Thunderstorms

    • 62
    • 76

    Partly Sunny

    • 62
    • 79

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

Today 17 Aug Lake

Mostly cloudy through mid Afternoon, then becoming partly cloudy. A slight chance of Showers and Thunderstorms in the morning. Highs in the upper 70s. Northeast Winds around 10 Mph. Chance of precipitation 20 percent.

Tonight 17 Aug Lake

Partly cloudy through the early Overnight, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Lows around 70. Northeast Winds 5 to 10 Mph, becoming east after midnight. Chance of precipitation 30 percent.

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Grandwood Park Temperature Statistics

August Temperature

Chicago/Waukegan Regional Airport (6.2 miles)

  • Lowest 3 August, 2025

    54.6 °F

  • Average August

    75.3 °F

  • Highest 9 August, 2025

    96.7 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    59.6 °F
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