Rock Run County Forest Preserve Weather Forecast

    • 70
    • 79

    Rain Showers

    • 73
    • 86

    Rain Showers

    • 67
    • 85

    Chance Thunderstorms

    • 63
    • 81

    Partly Sunny

    • 67
    • 82

    Chance Thunderstorms

    • 63
    • 81

    Slight Chance Thunderstorms

    • 61
    • 77

    Slight Chance Thunderstorms

Today 14 Aug Northern Will

Mostly cloudy. A slight chance of Showers. Temperatures in the upper 70s. East Winds around 10 Mph. Chance of precipitation 20 percent.

Tonight 14 Aug Northern Will

A chance of Showers in the evening. A chance of Thunderstorms. Showers after midnight. Lows around 70. East Winds around 5 Mph. Chance of precipitation near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Run County Forest Preserve Temperature Statistics

August Temperature

Joliet Regional Airport (1.2 miles)

  • Lowest 3 August, 2026

    60.6 °F

  • Average August

    75.3 °F

  • Highest 10 August, 2026

    89.4 °F

Climate (2021–2026)

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

    63.4 °F
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