Starved Rock State Park Weather Forecast

    • 40
    • 59

    Becoming Sunny

    • 46
    • 66

    Rain Showers

    • 41
    • 57

    Partly Sunny

    • 35
    • 56

    Mostly Sunny

    • 33
    • 57

    Mostly Sunny

    • 38
    • 57

    Partly Sunny

Today 19 Oct La Salle

Mostly cloudy in the morning then clearing. Rain early in the Morning, then a slight chance of rain late in the morning. Breezy. Highs around 60. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of precipitation 90 percent.

Tonight 19 Oct La Salle

Clear. Lows around 40. West Winds 5 to 10 Mph.

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Starved Rock State Park Temperature Statistics

October Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 9 October, 2025

    40.8 °F

  • Average October

    64.7 °F

  • Highest 3 October, 2025

    89.8 °F

Climate (2020–Present)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.2 °F
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