Upper Mississippi Waterfowl Area Weather Forecast

    • 44
    • 55

    Increasing Clouds

    • 24
    • 55

    Rain Showers

    • 32
    • 39

    Partly Sunny

    • 26
    • 56

    Partly Sunny

    • 30
    • 43

    Partly Sunny

    • 40
    • 47

    Mostly Cloudy

    • 42
    • 59

    Mostly Cloudy

Today 17 Dec St. Charles

Sunny. Highs in the mid 50s. Southeast Winds around 5 Mph.

Tonight 17 Dec St. Charles

Mostly cloudy. Patchy drizzle after midnight. Not as cool with Lows in the mid 40s. Temperature rising into the lower 50s after midnight. South Winds 15 to 20 Mph.

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Upper Mississippi Waterfowl Area Temperature Statistics

December Temperature

St. Louis Regional Airport (9.3 miles)

  • Lowest 5 December, 2025

    4.5 °F

  • Average December

    27 °F

  • Highest 9 December, 2025

    51.8 °F

Climate (2020–Present)

St. Louis Regional Airport (9.3 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    66.1 °F
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