Washington County State Lake Weather Forecast

    • 62
    • 79

    Mostly Sunny

    • 66
    • 85

    Partly Sunny

    • 65
    • 90

    Thunderstorms Likely

    • 62
    • 77

    Slight Chance Thunderstorms

    • 62
    • 78

    Partly Sunny

    • 65
    • 84

    Slight Chance Thunderstorms

    • 66
    • 85

    Slight Chance Thunderstorms

Today 16 Aug Washington

Partly sunny. Near steady temperature in the upper 70s. North Winds 5 to 10 Mph.

Tonight 16 Aug Washington

Mostly clear this Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 60s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington County State Lake Temperature Statistics

August Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 2 August, 2026

    59 °F

  • Average August

    77 °F

  • Highest 9 August, 2026

    95 °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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