Mount Pleasant Weather Forecast

    • 72
    • 90

    Thunderstorms

    • 70
    • 85

    Thunderstorms

    • 69
    • 84

    Chance Thunderstorms

    • 70
    • 89

    Mostly Sunny

    • 71
    • 89

    Mostly Sunny

    • 73
    • 91

    Mostly Sunny

    • 73
    • 91

    Mostly Sunny

Today 10 Jul St. Louis City

Partly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. South Winds around 5 Mph. Chance of rain 40 percent. Heat index Values up to 101.

Tonight 10 Jul St. Louis City

Mostly cloudy. Scattered Showers and Thunderstorms this Evening, then numerous Showers and Thunderstorms after midnight. Lows in the lower 70s. East Winds around 5 Mph this Evening, becoming light and variable. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Pleasant Temperature Statistics

July Temperature

St. Louis Downtown Airport (4.3 miles)

  • Lowest 5 July, 2026

    68.6 °F

  • Average July

    81.5 °F

  • Highest 2 July, 2026

    96.7 °F

Climate (2021–2026)

St. Louis Downtown Airport (4.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69.3 °F
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