Alto Weather Forecast

    • 41
    • 56

    Increasing Clouds

    • 46
    • 63

    Mostly Cloudy

    • 48
    • 68

    Slight Chance Thunderstorms

    • 49
    • 76

    Mostly Sunny

    • 53
    • 80

    Partly Sunny

    • 55
    • 83

    Partly Sunny

Today 21 May Fond Du Lac

Partly sunny in the morning then becoming mostly cloudy. Chance of Sprinkles in the late morning and afternoon. Highs in the upper 50s. East Winds 10 to 15 Mph.

Tonight 21 May Fond Du Lac

Partly cloudy. Near steady temperature in the lower 40s. Northeast Winds 5 to 10 Mph.

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Alto Temperature Statistics

May Temperature

Fond Du Lac County Airport (16.2 miles)

  • Lowest 2 May, 2026

    28.7 °F

  • Average May

    52.2 °F

  • Highest 16 May, 2026

    82.7 °F

Climate (2021–Present)

Fond Du Lac County Airport (16.2 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    58.4 °F
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