Washington County State Lake Weather Forecast

    • 26
    • 43

    Rain

    • 24
    • 39

    Slight Chance Snow

    • 16
    • 40

    Mostly Sunny

    • 26
    • 36

    Mostly Sunny

    • 33
    • 52

    Partly Sunny

    • 31
    • 55

    Mostly Cloudy

    • 24
    • 42

    Partly Sunny

Today 8 Jan Washington

Patchy fog late this morning. Rain. Much cooler. Near steady temperature in the lower 40s. Northeast Winds around 10 Mph with Gusts up to 20 Mph, becoming north with Gusts up to 30 Mph this afternoon. Chance of rain near 100 percent.

Tonight 8 Jan Washington

Mostly cloudy. Rain likely with a chance of snow in the evening. Cold with Lows in the upper 20s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

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Washington County State Lake Temperature Statistics

January Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 3 January, 2026

    26.6 °F

  • Average January

    36.7 °F

  • Highest 4 January, 2026

    60.8 °F

Climate (2021–Present)

Marysville Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    66 °F
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