Starved Rock State Park Weather Forecast

    • 78
    • 93

    Mostly Sunny

    • 76
    • 93

    Rain Showers Likely

    • 75
    • 90

    Chance Thunderstorms

    • 72
    • 89

    Chance Thunderstorms

    • 69
    • 87

    Chance Thunderstorms

    • 68
    • 87

    Slight Chance Thunderstorms

Today 1 Jul La Salle

Mostly sunny. Highs in the lower 90s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon. Heat index Values up to 107.

Tonight 1 Jul La Salle

Mostly clear. Humid with Lows in the upper 70s. Southwest Winds 10 to 15 Mph. Heat index Values up to 100 early in the evening.

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Starved Rock State Park Temperature Statistics

July Temperature

Illinois Valley Regional Airport (7.5 miles)

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  • Average July

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Climate (2021–2026)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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