Mount Pleasant Weather Forecast

    • 64
    • 87

    Becoming Sunny

    • 70
    • 90

    Partly Sunny

    • 74
    • 95

    Mostly Sunny

    • 77
    • 98

    Hot

    • 79
    • 99

    Hot

    • 79
    • 98

    Hot

    • 78
    • 98

    Hot

Today 28 Aug St. Louis City

Mostly sunny. Near steady temperature in the mid 80s. Northeast Winds around 5 Mph.

Tonight 28 Aug St. Louis City

Mostly clear. Lows in the mid 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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Mount Pleasant Temperature Statistics

August Temperature

St. Louis Downtown Airport (4.3 miles)

  • Lowest 24 August, 2026

    56.6 °F

  • Average August

    78.8 °F

  • Highest 11 August, 2026

    96.7 °F

Climate (2021–2026)

St. Louis Downtown Airport (4.3 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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