Washington County State Lake Weather Forecast

    • 58
    • 82

    Slight Chance Thunderstorms

    • 59
    • 86

    Mostly Sunny

    • 59
    • 84

    Partly Sunny

    • 59
    • 82

    Chance Thunderstorms

    • 59
    • 79

    Rain Showers Likely

    • 57
    • 77

    Chance Thunderstorms

Today 24 May Washington

Sunny. Highs in the lower 80s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 24 May Washington

Partly cloudy in the Evening, then clearing. Not as cool with Lows in the upper 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington County State Lake Temperature Statistics

May Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    63.4 °F

  • Highest 15 May, 2026

    91.4 °F

Climate (2021–Present)

Marysville Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    66.6 °F
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