Rock Run County Forest Preserve Weather Forecast

    • 70
    • 84

    Slight Chance Thunderstorms

    • 63
    • 83

    Slight Chance Thunderstorms

    • 71
    • 85

    Rain Showers Likely

    • 70
    • 86

    Thunderstorms Likely

    • 66
    • 83

    Rain Showers Likely

    • 63
    • 81

    Chance Thunderstorms

    • 60
    • 78

    Slight Chance Thunderstorms

Today 7 Aug Northern Will

Partly cloudy. Temperatures in the lower 80s. Southwest Winds around 10 Mph.

Tonight 7 Aug Northern Will

Partly cloudy. A slight chance of Showers and Thunderstorms. Lows around 70. Southwest Winds around 5 Mph. Chance of precipitation 20 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

    73.7 °F

  • Highest 4 August, 2026

    86.4 °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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