Joliet Weather Forecast

    • 54
    • 78

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 49
    • 79

    Rain Showers Likely

    • 46
    • 64

    Partly Sunny

    • 48
    • 69

    Partly Sunny

Today 31 Aug Northern Will

Mostly sunny. Highs in the upper 70s. East Winds 5 to 10 Mph.

Tonight 31 Aug Northern Will

Mostly clear. Lows in the mid 50s. East Winds 5 to 10 Mph.

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Joliet Temperature Statistics

August Temperature

Joliet Regional Airport (5 miles)

  • Lowest 2 August, 2025

    55.6 °F

  • Average August

    75.4 °F

  • Highest 16 August, 2025

    93.6 °F

Climate (2020–Present)

Joliet Regional Airport (5 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    63 °F
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