Washington County State Lake Weather Forecast

    • 73
    • 94

    Mostly Sunny

    • 76
    • 97

    Hot

    • 68
    • 91

    Mostly Sunny

    • 64
    • 86

    Rain Showers Likely

    • 64
    • 81

    Chance Thunderstorms

    • 64
    • 80

    Partly Sunny

    • 68
    • 86

    Mostly Sunny

Today 19 Jul Washington

Sunny. Near steady temperature in the lower 90s. East Winds around 5 Mph.

Tonight 19 Jul Washington

Mostly clear. Humid with Lows in the lower 70s. Southeast Winds around 5 Mph.

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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 5 July, 2026

    62.6 °F

  • Average July

    77.4 °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

    66.7 °F
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