Mount Pleasant Weather Forecast

    • 23
    • 38

    Mostly Cloudy

    • 4
    • 26

    Chance Snow

    • 9
    • 15

    Sunny

    • 27
    • 39

    Partly Sunny

    • 37
    • 49

    Mostly Cloudy

    • 43
    • 56

    Mostly Cloudy

Today 12 Dec St. Louis City

Mostly cloudy. Highs in the upper 30s. North Winds 5 to 10 Mph.

Tonight 12 Dec St. Louis City

Mostly cloudy. Lows in the lower 20s. Northwest Winds around 5 Mph.

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Mount Pleasant Temperature Statistics

December Temperature

St. Louis Downtown Airport (4.3 miles)

  • Lowest 5 December, 2025

    10 °F

  • Average December

    30.4 °F

  • Highest 9 December, 2025

    53.1 °F

Climate (2020–Present)

St. Louis Downtown Airport (4.3 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.6 °F
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