West Alton Weather Forecast

    • 76
    • 91

    Thunderstorms

    • 77
    • 92

    Thunderstorms

    • 78
    • 97

    Hot

    • 77
    • 97

    Hot

    • 71
    • 93

    Chance Thunderstorms

    • 65
    • 83

    Slight Chance Thunderstorms

    • 63
    • 80

    Partly Sunny

Today 26 Jul St. Charles

Mostly sunny with isolated Showers. Isolated Thunderstorms. Near steady temperature in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 106.

Tonight 26 Jul St. Charles

Partly cloudy this Evening, then becoming mostly cloudy. Scattered Showers and Thunderstorms. Lows in the mid 70s. South Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 103 early this evening.

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West Alton Temperature Statistics

July Temperature

St. Louis Regional Airport (9.9 miles)

  • Lowest 2 July, 2025

    63.9 °F

  • Average July

    76.9 °F

  • Highest 23 July, 2025

    93.2 °F

Climate (2020–Present)

St. Louis Regional Airport (9.9 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    65.9 °F
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