Washington County State Lake Weather Forecast

    • 66
    • 87

    Mostly Sunny

    • 66
    • 88

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 69
    • 92

    Rain Showers Likely

    • 66
    • 87

    Chance Thunderstorms

    • 66
    • 88

    Partly Sunny

Today 5 Jul Washington

Sunny. Highs in the upper 80s. East Winds around 5 Mph.

Tonight 5 Jul Washington

Mostly clear. Humid with Lows in the upper 60s. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Washington County State Lake Temperature Statistics

July Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 3 July, 2026

    68 °F

  • Average July

    81.2 °F

  • Highest 2 July, 2026

    91.4 °F

Climate (2021–2026)

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

    66.6 °F
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