Symerton Weather Forecast

    • 58
    • 87

    Mostly Sunny

    • 58
    • 88

    Mostly Sunny

    • 60
    • 87

    Mostly Sunny

    • 63
    • 90

    Partly Sunny

    • 62
    • 86

    Chance Rain Showers

    • 62
    • 82

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

Today 15 Sep Southern Will

Sunny. Highs in the upper 80s. East Winds around 5 Mph.

Tonight 15 Sep Southern Will

Mostly clear. Lows in the upper 50s. East Winds around 5 Mph.

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Symerton Temperature Statistics

September Temperature

Joliet Regional Airport (14.3 miles)

  • Lowest 7 September, 2025

    40.1 °F

  • Average September

    64.2 °F

  • Highest 12 September, 2025

    86.5 °F

Climate (2020–Present)

Joliet Regional Airport (14.3 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    63 °F
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