Flossmoor Weather Forecast

    • 45
    • 69

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

    • 61
    • 82

    Partly Sunny

    • 60
    • 82

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

Today 7 Sep Southern Cook

Mostly sunny. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 7 Sep Southern Cook

Mostly clear. Lows in the mid 40s. East Winds around 5 Mph, becoming south after midnight.

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Flossmoor Temperature Statistics

September Temperature

Lansing Municipal Airport (8.1 miles)

  • Lowest 4 September, 2025

    48.4 °F

  • Average September

    62.3 °F

  • Highest 2 September, 2025

    80.1 °F

Climate (2020–Present)

Lansing Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    60.3 °F
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