Washington County State Lake Weather Forecast

    • 43
    • 80

    Rain Showers Likely

    • 42
    • 69

    Chance Rain Showers

    • 48
    • 66

    Rain Showers Likely

    • 46
    • 67

    Rain Showers

    • 38
    • 61

    Slight Chance Rain Showers

    • 42
    • 64

    Partly Sunny

Today 23 Apr Washington

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Morning, then partly sunny with Showers likely with a chance of Thunderstorms in the afternoon. Highs in the upper 70s. Southwest Winds 15 to 20 Mph. Chance of rain 70 percent.

Tonight 23 Apr Washington

Cloudy. A chance of Showers. Near steady temperature in the mid 60s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington County State Lake Temperature Statistics

April Temperature

Marysville Municipal Airport (26.1 miles)

  • Lowest 5 April, 2026

    30.2 °F

  • Average April

    56.2 °F

  • Highest 13 April, 2026

    89.6 °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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