Washington County State Lake Weather Forecast

    • 53
    • 73

    Becoming Sunny

    • 57
    • 79

    Slight Chance Thunderstorms

    • 64
    • 82

    Partly Sunny

    • 61
    • 93

    Slight Chance Thunderstorms

    • 57
    • 81

    Mostly Sunny

    • 65
    • 87

    Chance Thunderstorms

Today 14 Jun Washington

Sunny. Not as warm with Highs in the mid 70s. North Winds 10 to 15 Mph.

Tonight 14 Jun Washington

Partly cloudy in the Evening, then clearing. Lows in the mid 50s. North Winds 5 to 10 Mph, becoming southwest after midnight.

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Washington County State Lake Temperature Statistics

June Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 12 June, 2026

    51.8 °F

  • Average June

    75.6 °F

  • Highest 10 June, 2026

    91.4 °F

Climate (2021–Present)

Marysville Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    66.7 °F
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