Starved Rock State Park Weather Forecast

    • 35
    • 53

    Chance Rain Showers

    • 37
    • 53

    Partly Sunny

    • 26
    • 50

    Partly Sunny

    • 37
    • 45

    Mostly Cloudy

    • 50
    • 68

    Chance Rain Showers

    • 48
    • 68

    Chance Rain Showers

Today 4 Apr La Salle

Cloudy. A slight chance of Showers late in the morning. Breezy. Near steady temperature in the upper 40s. West Winds 15 to 25 Mph. Gusts to 30 Mph. Chance of precipitation 20 percent.

Tonight 4 Apr La Salle

Mostly cloudy and breezy. Lows in the mid 30s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

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Starved Rock State Park Temperature Statistics

April Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 1 April, 2026

    37 °F

  • Average April

    48.8 °F

  • Highest 2 April, 2026

    72 °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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