Sy Lake Weather Forecast

    • 42
    • 54

    Rain Showers

    • 41
    • 52

    Rain Showers

    • 36
    • 53

    Chance Rain Showers

    • 40
    • 57

    Mostly Sunny

    • 46
    • 66

    Slight Chance Rain Showers

    • 49
    • 67

    Slight Chance Rain Showers

    • 48
    • 72

    Partly Sunny

Today 30 Apr Manitowoc

Partly sunny. Temperatures in the mid 40s at the lakeshore to the lower to mid 50s well inland. Southeast wind 5 to 10 Mph.

Tonight 30 Apr Manitowoc

Mostly cloudy. Rain Showers after midnight. Lows around 40. Light and variable wind becoming east 5 to 10 Mph after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sy Lake Temperature Statistics

April Temperature

Sheboygan County Memorial Airport (13 miles)

  • Lowest 1 April, 2025

    23.8 °F

  • Average April

    44.7 °F

  • Highest 28 April, 2025

    70 °F

Climate (2020–Present)

Sheboygan County Memorial Airport (13 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    57.3 °F
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