Crescent City Weather Forecast

    • 63
    • 89

    Chance Rain Showers

    • 62
    • 84

    Slight Chance Thunderstorms

    • 62
    • 81

    Chance Thunderstorms

    • 61
    • 79

    Chance Rain Showers

    • 60
    • 77

    Chance Rain Showers

    • 58
    • 76

    Partly Sunny

Today 19 Sep Iroquois

Mostly sunny in the Morning, then becoming mostly cloudy. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 19 Sep Iroquois

Mostly cloudy. Scattered Showers and Thunderstorms. Lows in the lower 60s. Southeast Winds around 5 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crescent City Temperature Statistics

September Temperature

Greater Kankakee Airport (20.5 miles)

  • Lowest 8 September, 2025

    41 °F

  • Average September

    63.9 °F

  • Highest 15 September, 2025

    87.8 °F

Climate (2020–Present)

Greater Kankakee Airport (20.5 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    61.7 °F
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