Lake Winona Weather Forecast

    • 75
    • 87

    Slight Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 68
    • 84

    Rain Showers Likely

    • 68
    • 85

    Partly Sunny

    • 69
    • 87

    Mostly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

Today 22 Jul Winona

Mostly cloudy in the Morning, then becoming partly sunny. Humid with Highs in the upper 80s. South Winds 10 to 15 Mph. Heat index Values in the mid 90s in the afternoon.

Tonight 22 Jul Winona

Partly cloudy. Humid with Lows in the mid 70s. South Winds 10 to 15 Mph. Heat index Values in the mid 90s early in the evening.

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Lake Winona Temperature Statistics

July Temperature

Winona, Winona Municipal Airport-Max Conrad Field (4.3 miles)

  • Lowest 17 July, 2025

    53.6 °F

  • Average July

    73.9 °F

  • Highest 4 July, 2025

    91.4 °F

Climate (2020–Present)

Winona, Winona Municipal Airport-Max Conrad Field (4.3 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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