Harrisonville Weather Forecast

    • 68
    • 90

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

    • 65
    • 82

    Slight Chance Thunderstorms

    • 67
    • 86

    Partly Sunny

    • 67
    • 88

    Partly Sunny

    • 66
    • 89

    Partly Sunny

Today 21 Aug Monroe

Sunny. Near steady temperature in the mid 80s. Light and variable Winds.

Tonight 21 Aug Monroe

Mostly clear. Lows in the upper 60s. Light and variable Winds, becoming southwest around 5 Mph after midnight.

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Harrisonville Temperature Statistics

August Temperature

St. Louis Downtown Airport (22.4 miles)

  • Lowest 3 August, 2026

    63.6 °F

  • Average August

    79.8 °F

  • Highest 11 August, 2026

    96.7 °F

Climate (2021–2026)

St. Louis Downtown Airport (22.4 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    69.3 °F
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