Washington County State Lake Weather Forecast

    • 57
    • 85

    Breezy

    • 59
    • 93

    Mostly Sunny

    • 60
    • 89

    Rain Showers Likely

    • 65
    • 90

    Chance Thunderstorms

    • 52
    • 89

    Chance Thunderstorms

    • 46
    • 74

    Slight Chance Rain Showers

Today 14 May Washington

Partly sunny and breezy. Highs in the mid 80s. South Winds 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 14 May Washington

Partly cloudy. Lows in the upper 50s. Southeast Winds 10 to 15 Mph, becoming south 5 to 10 Mph after midnight.

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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

    60.3 °F

  • Highest 4 May, 2026

    86 °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 °F

  • Average High 2021–2026

    66.6 °F
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