Foristell Weather Forecast

    • 20
    • 39

    Mostly Cloudy

    • 26
    • 35

    Partly Sunny

    • 39
    • 52

    Partly Sunny

    • 26
    • 45

    Mostly Cloudy

    • 18
    • 35

    Mostly Cloudy

    • 5
    • 26

    Partly Sunny

    • 7
    • 20

    Partly Sunny

Today 7 Dec St. Charles

Cloudy with a slight chance of very light drizzle. Near steady temperature in the mid 30s. Temperature falling into the mid 30s late. North Winds 10 to 15 Mph.

Tonight 7 Dec St. Charles

Mostly cloudy. A slight chance of snow this evening. Cooler with Lows in the lower 20s. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow 20 percent.

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Foristell Temperature Statistics

December Temperature

Washington Regional Airport (15.5 miles)

  • Lowest 3 December, 2025

    14 °F

  • Average December

    26.8 °F

  • Highest 5 December, 2025

    46.4 °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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