Weldon Spring Weather Forecast

    • 62
    • 83

    Increasing Clouds

    • 64
    • 82

    Rain Showers

    • 65
    • 79

    Chance Thunderstorms

    • 72
    • 88

    Slight Chance Thunderstorms

    • 75
    • 95

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

    • 73
    • 93

    Partly Sunny

Today 22 Jul St. Charles

Mostly sunny. Near steady temperature in the lower 80s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 22 Jul St. Charles

Partly cloudy this Evening, then clearing. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Weldon Spring Temperature Statistics

July Temperature

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

  • Lowest 13 July, 2026

    64.7 °F

  • Average July

    80.7 °F

  • Highest 2 July, 2026

    96.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    68.9 °F
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