Ballwin Weather Forecast

    • 52
    • 77

    Rain Showers

    • 57
    • 82

    Slight Chance Rain Showers

    • 45
    • 68

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 58
    • 80

    Slight Chance Thunderstorms

    • 52
    • 77

    Mostly Sunny

Today 8 May St. Louis

Mostly cloudy Early, then partly sunny with a chance of Showers and Thunderstorms. Highs in the mid 70s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 8 May St. Louis

Mostly cloudy. Showers with a chance of Thunderstorms in the evening. Lows in the lower 50s. West Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ballwin Temperature Statistics

May Temperature

St. Louis, Spirit Of St. Louis Airport (6.8 miles)

  • Lowest 3 May, 2026

    37.7 °F

  • Average May

    56.5 °F

  • Highest 4 May, 2026

    81.6 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (6.8 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.8 °F
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