Washington County State Lake Weather Forecast

    • 55
    • 75

    Sunny

    • 56
    • 82

    Mostly Sunny

    • 56
    • 79

    Sunny

    • 57
    • 76

    Mostly Sunny

    • 59
    • 76

    Sunny

    • 61
    • 78

    Mostly Sunny

Today 5 Oct Washington

Patchy fog in the morning. Sunny. Highs in the mid 70s. South Winds 5 to 10 Mph.

Tonight 5 Oct Washington

Clear. Lows in the mid 50s. South Winds 5 to 10 Mph.

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Washington County State Lake Temperature Statistics

October Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 2 October, 2026

    46.4 °F

  • Average October

    60.6 °F

  • Highest 1 October, 2026

    71.6 °F

Climate (2021–2026)

Marysville Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    66.6 °F
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