Rock Run County Forest Preserve Weather Forecast

    • 67
    • 77

    Rain Showers

    • 67
    • 71

    Rain Showers

    • 61
    • 74

    Partly Sunny

    • 61
    • 78

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 65
    • 82

    Chance Rain Showers

    • 65
    • 82

    Chance Thunderstorms

Today 31 Jul Northern Will

Showers and a slight chance of Thunderstorms. Temperatures in the lower 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 90 percent.

Tonight 31 Jul Northern Will

A slight chance of Thunderstorms early in the evening. Showers. A chance of Thunderstorms in the late evening and overnight. Lows in the mid 60s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Run County Forest Preserve Temperature Statistics

July Temperature

Joliet Regional Airport (1.2 miles)

  • Lowest 23 July, 2026

    50.7 °F

  • Average July

    77.1 °F

  • Highest 2 July, 2026

    94.6 °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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