Starved Rock State Park Weather Forecast

    • 65
    • 84

    Chance Rain Showers

    • 64
    • 85

    Chance Rain Showers

    • 66
    • 86

    Mostly Sunny

    • 68
    • 88

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

    • 70
    • 90

    Mostly Sunny

Today 10 Jul La Salle

Mostly cloudy. Patchy fog early in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the mid 80s. Northeast Winds around 5 Mph. Chance of precipitation 20 percent.

Tonight 10 Jul La Salle

Mostly cloudy. A slight chance of Showers and Thunderstorms early in the evening. Lows in the mid 60s. Northeast Winds around 5 Mph. Chance of precipitation 20 percent.

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Starved Rock State Park Temperature Statistics

July Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 6 July, 2026

    66.2 °F

  • Average July

    78.2 °F

  • Highest 2 July, 2026

    93.2 °F

Climate (2021–2026)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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