Starved Rock State Park Weather Forecast

    • 69
    • 91

    Sunny

    • 72
    • 94

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 72
    • 92

    Mostly Sunny

    • 74
    • 91

    Partly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

Today 13 Jul La Salle

Sunny. Highs around 90. North Winds around 5 Mph.

Tonight 13 Jul La Salle

Clear. Lows in the upper 60s. West Winds around 5 Mph.

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Starved Rock State Park Temperature Statistics

July Temperature

Illinois Valley Regional Airport (7.5 miles)

  • Lowest 6 July, 2026

    66.2 °F

  • Average July

    77.7 °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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