Joliet Weather Forecast

    • 68
    • 91

    Increasing Clouds

    • 68
    • 91

    Partly Sunny

    • 67
    • 92

    Mostly Sunny

    • 65
    • 89

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

    • 62
    • 85

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

Today 20 Sep Will

Mostly clear early in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph.

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Joliet Temperature Statistics

September Temperature

Joliet Regional Airport (5 miles)

  • Lowest 2 September, 2017

    43.7 °F
  • Average September

    65.6 °F
  • Highest 16 September, 2017

    87.6 °F

Climate (2010–Present)

Joliet Regional Airport (5 miles)

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  • Average Low 2010–Present

    41.2 °F
  • Average 2010–Present

    51.8 °F
  • Average High 2010–Present

    60.7 °F
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