Alto Weather Forecast

    • 59
    • 85

    Slight Chance Thunderstorms

    • 59
    • 76

    Rain Showers

    • 59
    • 74

    Chance Thunderstorms

    • 56
    • 75

    Chance Thunderstorms

    • 57
    • 75

    Chance Rain Showers

    • 55
    • 74

    Slight Chance Rain Showers

    • 53
    • 72

    Partly Sunny

Today 18 Sep Fond Du Lac

Mostly sunny. Highs in the lower 80s. East Winds 5 to 10 Mph.

Tonight 18 Sep Fond Du Lac

Partly cloudy in the evening then becoming mostly cloudy. Lows around 60. East Winds 5 to 10 Mph.

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Alto Temperature Statistics

September Temperature

Fond Du Lac County Airport (16.2 miles)

  • Lowest 4 September, 2025

    41 °F
  • Average September

    61 °F
  • Highest 16 September, 2025

    82 °F

Climate (2020–Present)

Fond Du Lac County Airport (16.2 miles)

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  • Average Low 2020–2025

    39.9 °F
  • Average 2020–2025

    49.3 °F
  • Average High 2020–2025

    58.4 °F
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