Washington County State Lake Weather Forecast

    • 35
    • 62

    Decreasing Clouds

    • 33
    • 62

    Partly Sunny

    • 43
    • 66

    Mostly Sunny

    • 46
    • 79

    Partly Sunny

    • 46
    • 76

    Partly Sunny

    • 49
    • 75

    Chance Thunderstorms

Today 30 Apr Washington

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the lower 60s. West Winds 5 to 10 Mph, becoming north with Gusts up to 20 Mph in the afternoon. Chance of rain 30 percent.

Tonight 30 Apr Washington

Partly cloudy. Lows around 40. Southwest Winds around 5 Mph.

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  • Temperature Real-Time

Washington County State Lake Temperature Statistics

April Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 5 April, 2026

    30.2 °F

  • Average April

    56.2 °F

  • Highest 13 April, 2026

    89.6 °F

Climate (2021–Present)

Marysville Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    66.6 °F
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