Downtown West Weather Forecast

    • 76
    • 100

    Thunderstorms

    • 78
    • 95

    Chance Rain Showers

    • 75
    • 99

    Hot

    • 74
    • 97

    Hot

    • 74
    • 98

    Chance Rain Showers

    • 69
    • 93

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

Today 15 Sep St. Louis City

Sunny with a slight chance of Showers and Thunderstorms. Warmer. Near steady temperature in the mid 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 105.

Tonight 15 Sep St. Louis City

Partly cloudy this Evening, then becoming mostly cloudy. A chance of Showers and Thunderstorms. Lows in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 50 percent. Heat index Values up to 101 early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Downtown West Temperature Statistics

September Temperature

St. Louis Downtown Airport (5.6 miles)

  • Lowest 8 September, 2026

    59.6 °F

  • Average September

    81.7 °F

  • Highest 5 September, 2026

    102.7 °F

Climate (2021–2026)

St. Louis Downtown Airport (5.6 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    69.4 °F
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