Weldon Spring Weather Forecast

    • 47
    • 74

    Becoming Sunny

    • 41
    • 64

    Sunny

    • 39
    • 65

    Sunny

    • 43
    • 65

    Mostly Sunny

    • 49
    • 60

    Chance Rain Showers

    • 51
    • 61

    Chance Rain Showers

    • 51
    • 69

    Mostly Cloudy

Today 20 Oct St. Charles

Sunny. Near steady temperature in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 20 Oct St. Charles

Partly cloudy with a chance of Sprinkles this Evening, then clear after midnight. Lows in the upper 40s. Southwest Winds 10 to 15 Mph, becoming west 5 to 10 Mph after midnight. Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Weldon Spring Temperature Statistics

October Temperature

St. Louis, Spirit Of St. Louis Airport (3.7 miles)

  • Lowest 9 October, 2025

    42.1 °F

  • Average October

    66.9 °F

  • Highest 3 October, 2025

    88 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (3.7 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    68.3 °F
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