Harrisonville Weather Forecast

    • 58
    • 82

    Partly Sunny

    • 60
    • 89

    Mostly Sunny

    • 62
    • 92

    Mostly Sunny

    • 65
    • 94

    Mostly Sunny

    • 66
    • 95

    Partly Sunny

    • 65
    • 95

    Partly Sunny

    • 65
    • 94

    Partly Sunny

Today 9 Sep Monroe

Mostly sunny. Near steady temperature around 80. Southeast Winds around 5 Mph.

Tonight 9 Sep Monroe

Partly cloudy. Not as cool with Lows in the upper 50s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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Harrisonville Temperature Statistics

September Temperature

St. Louis Downtown Airport (22.4 miles)

  • Lowest 7 September, 2025

    45 °F

  • Average September

    67.2 °F

  • Highest 3 September, 2025

    87.1 °F

Climate (2020–Present)

St. Louis Downtown Airport (22.4 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.4 °F
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