St Charles Weather Forecast

    • 10
    • 19

    Chance Snow

    • -7
    • 19

    Slight Chance Snow

    • -16
    • -2

    Cold

    • -4
    • 2

    Cold

    • 12
    • 23

    Partly Sunny

    • 25
    • 31

    Mostly Cloudy

Today 11 Dec Winona

Mostly cloudy. A chance of snow in the afternoon. Snow accumulation little or no. Highs around 20. Southwest Winds around 5 Mph, becoming light Winds in the afternoon. Chance of snow 50 percent.

Tonight 11 Dec Winona

Mostly cloudy. Colder with Lows around 10 above. Northwest Winds around 5 Mph.

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St Charles Temperature Statistics

December Temperature

Winona, Winona Municipal Airport-Max Conrad Field (19.3 miles)

  • Lowest 4 December, 2025

    -2.2 °F

  • Average December

    18.3 °F

  • Highest 3 December, 2025

    30.2 °F

Climate (2020–Present)

Winona, Winona Municipal Airport-Max Conrad Field (19.3 miles)

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  • Average Low 2020–2025

    39.3 °F

  • Average 2020–2025

    48.4 °F

  • Average High 2020–2025

    57.5 °F
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