St Charles Weather Forecast

    • 55
    • 71

    Becoming Sunny

    • 65
    • 74

    Rain Showers Likely

    • 61
    • 79

    Slight Chance Thunderstorms

    • 63
    • 77

    Chance Thunderstorms

    • 69
    • 80

    Chance Thunderstorms

    • 70
    • 87

    Chance Thunderstorms

Today 17 Jul Winona

Mostly sunny. Highs in the lower 70s. North Winds 5 to 10 Mph.

Tonight 17 Jul Winona

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. East Winds around 5 Mph, becoming southeast after midnight.

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St Charles Temperature Statistics

July Temperature

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

  • Lowest 13 July, 2025

    55.4 °F

  • Average July

    75.4 °F

  • Highest 4 July, 2025

    91.4 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    57.3 °F
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