Rock Run County Forest Preserve Weather Forecast

    • 34
    • 50

    Gradual Clearing

    • 32
    • 55

    Mostly Sunny

    • 36
    • 55

    Partly Sunny

    • 41
    • 59

    Mostly Cloudy

    • 44
    • 63

    Mostly Cloudy

    • 46
    • 63

    Chance Rain Showers

    • 43
    • 62

    Chance Rain Showers

Today 22 Oct Northern Will

Cloudy, breezy. Highs around 50. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 22 Oct Northern Will

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy frost late. Lows in the mid 30s. Northwest Winds 10 to 15 Mph, becoming west 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Run County Forest Preserve Temperature Statistics

October Temperature

Joliet Regional Airport (1.2 miles)

  • Lowest 20 October, 2025

    35.1 °F

  • Average October

    63.6 °F

  • Highest 3 October, 2025

    89.4 °F

Climate (2020–Present)

Joliet Regional Airport (1.2 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    63.2 °F
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