Starved Rock State Park Weather Forecast

    • 71
    • 80

    Decreasing Clouds

    • 76
    • 90

    Slight Chance Thunderstorms

    • 72
    • 93

    Slight Chance Thunderstorms

    • 65
    • 87

    Mostly Sunny

    • 66
    • 88

    Mostly Sunny

    • 68
    • 88

    Slight Chance Thunderstorms

Today 25 Jul La Salle

Cloudy. A chance of drizzle late in the Morning, then a slight chance of drizzle early in the afternoon. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 25 Jul La Salle

Partly cloudy in the Evening, then becoming mostly cloudy. Humid with Lows in the lower 70s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • 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

    77.2 °F

  • Highest 2 July, 2026

    93.2 °F

Climate (2021–2026)

Illinois Valley Regional Airport (7.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.7 °F
Get WillyWeather+ to remove ads