Femme Osage Weather Forecast

    • 20
    • 40

    Mostly Cloudy

    • 27
    • 35

    Partly Sunny

    • 40
    • 53

    Mostly Cloudy

    • 27
    • 47

    Chance Rain/Snow

    • 16
    • 38

    Slight Chance Rain/Snow

    • 6
    • 24

    Partly Sunny

Today 7 Dec St. Charles

Mostly cloudy with a slight chance of very light drizzle. Highs in the lower 40s. Temperature falling into the mid 30s. North Winds 10 to 15 Mph.

Tonight 7 Dec St. Charles

Mostly cloudy. A slight chance of snow in the evening. Much cooler with Lows in the lower 20s. North Winds 10 to 15 Mph. Chance of snow 20 percent.

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Femme Osage Temperature Statistics

December Temperature

Washington Regional Airport (4.3 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 (4.3 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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