Rock Run County Forest Preserve Weather Forecast

    • 45
    • 56

    Increasing Clouds

    • 54
    • 76

    Chance Thunderstorms

    • 57
    • 76

    Partly Sunny

    • 62
    • 81

    Rain Showers Likely

    • 50
    • 75

    Rain Showers Likely

    • 47
    • 68

    Mostly Cloudy

    • 46
    • 64

    Chance Rain Showers

Today 20 Apr Northern Will

Mostly sunny. Highs in the mid 50s. Southeast Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 20 Apr Northern Will

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 40s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Run County Forest Preserve Temperature Statistics

April Temperature

Joliet Regional Airport (1.2 miles)

  • Lowest 7 April, 2026

    31.5 °F

  • Average April

    55.3 °F

  • Highest 17 April, 2026

    83.8 °F

Climate (2021–Present)

Joliet Regional Airport (1.2 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    63.3 °F
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