Starved Rock State Park Weather Forecast

    • 34
    • 50

    Becoming Sunny

    • 31
    • 53

    Mostly Sunny

    • 46
    • 57

    Mostly Sunny

    • 52
    • 75

    Partly Sunny

    • 57
    • 77

    Mostly Sunny

    • 61
    • 82

    Rain Showers Likely

Today 18 Apr La Salle

Mostly cloudy in the Morning, then becoming partly cloudy. Breezy. Highs around 50. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 18 Apr La Salle

Clear. Areas of frost after midnight. Lows in the mid 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming southwest 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Starved Rock State Park Temperature Statistics

April Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 7 April, 2026

    30.2 °F

  • Average April

    54.2 °F

  • Highest 12 April, 2026

    80.6 °F

Climate (2021–Present)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    62.5 °F
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