Starved Rock State Park Weather Forecast

    • 42
    • 68

    Mostly Cloudy

    • 54
    • 70

    Mostly Sunny

    • 33
    • 68

    Mostly Cloudy

    • 34
    • 50

    Partly Sunny

    • 37
    • 56

    Mostly Cloudy

    • 45
    • 58

    Mostly Cloudy

Today 20 Mar La Salle

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the upper 60s. West Winds 10 to 15 Mph, becoming north in the afternoon.

Tonight 20 Mar La Salle

Mostly cloudy. Lows in the lower 40s. Northeast Winds 5 to 10 Mph, becoming east after midnight.

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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

    43.4 °F

  • Highest 10 March, 2026

    76.6 °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

    62.4 °F
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