Weldon Spring Weather Forecast

    • 40
    • 57

    Chance Rain Showers

    • 40
    • 68

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

    • 61
    • 81

    Partly Sunny

    • 63
    • 84

    Chance Rain Showers

Today 18 Apr St. Charles

Mostly sunny. Much cooler with Highs in the mid 50s. Northwest Winds 15 to 20 Mph.

Tonight 18 Apr St. Charles

Clear. Lows around 40. Northwest Winds 10 to 15 Mph, becoming west around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Weldon Spring Temperature Statistics

April Temperature

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

  • Lowest 6 April, 2026

    35.7 °F

  • Average April

    64.3 °F

  • Highest 14 April, 2026

    89.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    68.8 °F
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