Washington County State Lake Weather Forecast

    • 77
    • 99

    Hot

    • 74
    • 100

    Hot

    • 71
    • 88

    Chance Rain Showers

    • 71
    • 88

    Chance Thunderstorms

    • 70
    • 87

    Chance Thunderstorms

    • 66
    • 85

    Mostly Sunny

    • 65
    • 83

    Mostly Sunny

Today 26 Jul Washington

Sunny, hot with Highs around 100. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 109.

Tonight 26 Jul Washington

Partly cloudy. Lows in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 108 early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington County State Lake Temperature Statistics

July Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 23 July, 2026

    60.8 °F

  • Average July

    77.5 °F

  • Highest 20 July, 2026

    98.6 °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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