St Charles Weather Forecast

    • 29
    • 45

    Rain

    • 26
    • 38

    Windy

    • 28
    • 38

    Snow

    • 8
    • 31

    Snow Likely

    • -2
    • 17

    Partly Sunny

    • 11
    • 21

    Slight Chance Snow

Today 12 Mar Winona

Mostly sunny in the Morning, then mostly cloudy with a chance of rain with a slight chance of snow in the afternoon. Highs in the mid 40s. Southwest Winds 5 to 10 Mph, becoming south 10 to 20 Mph with Gusts up to 30 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 12 Mar Winona

Mostly cloudy. Rain in the Evening, then a chance of rain and snow after midnight. Patchy blowing snow after midnight. Very windy with Lows around 30. Southwest Winds 20 to 30 Mph with Gusts up to 40 Mph, becoming west 25 to 40 Mph with Gusts up to 55 Mph after midnight. Chance of precipitation 90 percent.

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St Charles Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    17.6 °F

  • Average March

    40 °F

  • Highest 9 March, 2026

    66.2 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    57.6 °F
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