St. Louis Weather Forecast

    • 77
    • 97

    Hot

    • 78
    • 99

    Hot

    • 77
    • 100

    Hot

    • 74
    • 98

    Chance Thunderstorms

    • 69
    • 88

    Slight Chance Thunderstorms

    • 67
    • 86

    Mostly Sunny

Today 16 Aug St. Louis City

Sunny, hot. Near steady temperature in the mid 90s. South Winds around 5 Mph. Heat index Values up to 107.

Tonight 16 Aug St. Louis City

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 70s. Southeast Winds around 5 Mph. Heat index Values up to 103 early in the evening.

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St. Louis Temperature Statistics

August Temperature

St. Louis Downtown Airport (5 miles)

  • Lowest 3 August, 2025

    56.6 °F

  • Average August

    78.5 °F

  • Highest 8 August, 2025

    94.6 °F

Climate (2020–Present)

St. Louis Downtown Airport (5 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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