Foristell Weather Forecast

    • 46
    • 74

    Mostly Sunny

    • 41
    • 64

    Sunny

    • 38
    • 65

    Sunny

    • 43
    • 65

    Partly Sunny

    • 49
    • 59

    Chance Rain Showers

    • 50
    • 60

    Chance Rain Showers

    • 51
    • 68

    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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Foristell Temperature Statistics

October Temperature

Washington Regional Airport (15.5 miles)

  • Lowest 9 October, 2025

    44.6 °F

  • Average October

    67.4 °F

  • Highest 2 October, 2025

    89.6 °F

Climate (2020–Present)

Washington Regional Airport (15.5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    69 °F
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