Starved Rock State Park Weather Forecast

    • 61
    • 83

    Mostly Sunny

    • 63
    • 84

    Sunny

    • 67
    • 86

    Mostly Cloudy

    • 67
    • 83

    Chance Rain Showers

    • 65
    • 80

    Chance Rain Showers

    • 64
    • 82

    Mostly Sunny

Today 28 Jul La Salle

Mostly sunny. Near steady temperature in the lower 80s. Northeast Winds around 10 Mph.

Tonight 28 Jul La Salle

Clear. Less humid with Lows in the lower 60s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Starved Rock State Park Temperature Statistics

July Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 23 July, 2026

    53.6 °F

  • Average July

    76.6 °F

  • Highest 2 July, 2026

    93.2 °F

Climate (2021–2026)

Illinois Valley Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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