Old Mill Creek Weather Forecast

    • 66
    • 78

    Mostly Sunny

    • 72
    • 85

    Partly Sunny

    • 76
    • 94

    Mostly Sunny

    • 71
    • 94

    Chance Thunderstorms

    • 69
    • 85

    Chance Thunderstorms

    • 69
    • 86

    Chance Thunderstorms

    • 70
    • 87

    Partly Sunny

Today 21 Jul Lake

Mostly sunny. Hazy late in the morning. Highs around 80 Inland, but only in the mid 70s near the lake. East Winds around 10 Mph.

Tonight 21 Jul Lake

Mostly clear early in the Evening, then becoming partly cloudy. Lows in the mid 60s. East Winds 5 to 10 Mph, becoming southeast after midnight.

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Old Mill Creek Temperature Statistics

July Temperature

Chicago/Waukegan Regional Airport (5.6 miles)

  • Lowest 17 July, 2025

    55.7 °F

  • Average July

    75 °F

  • Highest 5 July, 2025

    93.7 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    59.5 °F
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