Starved Rock State Park Weather Forecast

    • 39
    • 51

    Increasing Clouds

    • 49
    • 64

    Partly Sunny

    • 63
    • 79

    Chance Thunderstorms

    • 40
    • 78

    Rain Showers Likely

    • 33
    • 51

    Chance Thunderstorms

    • 38
    • 50

    Chance Rain Showers

Today 28 Mar La Salle

Sunny. Highs around 50. Southwest Winds 5 to 10 Mph, increasing to south 10 to 15 Mph in the afternoon.

Tonight 28 Mar La Salle

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 30s. South Winds 10 to 15 Mph.

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Starved Rock State Park Temperature Statistics

March Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 16 March, 2026

    17.1 °F

  • Average March

    45.6 °F

  • Highest 21 March, 2026

    80.2 °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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