Washington County State Lake Weather Forecast

    • 60
    • 94

    Thunderstorms Likely

    • 44
    • 85

    Rain Showers

    • 41
    • 63

    Partly Sunny

    • 45
    • 62

    Mostly Cloudy

    • 48
    • 64

    Slight Chance Thunderstorms

    • 53
    • 73

    Slight Chance Thunderstorms

Today 17 May Washington

Partly sunny this Morning, then sunny with a chance of Showers with a slight chance of Thunderstorms this afternoon. Windy with Highs in the mid 90s. South Winds 20 to 30 Mph. Chance of rain 40 percent.

Tonight 17 May Washington

Showers likely with a chance of Thunderstorms. Breezy with Lows in the lower 60s. South Winds 20 to 25 Mph with Gusts up to 40 Mph, Diminishing to 5 to 10 Mph with Gusts up to 20 Mph after midnight. Chance of rain 70 percent.

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  • 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

    43.8 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    66.6 °F
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