Starved Rock State Park Weather Forecast

    • 45
    • 66

    Rain Showers Likely

    • 38
    • 62

    Mostly Sunny

    • 54
    • 69

    Slight Chance Thunderstorms

    • 67
    • 83

    Chance Thunderstorms

    • 46
    • 77

    Chance Rain Showers

    • 49
    • 67

    Partly Sunny

    • 49
    • 66

    Chance Rain Showers

Today 25 Apr La Salle

Mostly cloudy. Isolated Showers. Highs in the mid 60s. North Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 25 Apr La Salle

Mostly cloudy. Lows in the mid 40s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Starved Rock State Park Temperature Statistics

April Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 8 April, 2025

    25.5 °F
  • Average April

    50.7 °F
  • Highest 23 April, 2025

    78.8 °F

Climate (2020–Present)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2020–2025

    43.1 °F
  • Average 2020–2025

    52.5 °F
  • Average High 2020–2025

    61.9 °F
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