Washington County State Lake Weather Forecast

    • 63
    • 74

    Chance Thunderstorms

    • 66
    • 82

    Slight Chance Thunderstorms

    • 66
    • 82

    Chance Thunderstorms

    • 63
    • 84

    Mostly Sunny

    • 65
    • 82

    Chance Rain Showers

    • 68
    • 84

    Chance Thunderstorms

    • 70
    • 88

    Chance Thunderstorms

Today 23 Aug Washington

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the mid 70s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 23 Aug Washington

Mostly clear this Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 60s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • 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

    76.1 °F

  • Highest 9 August, 2026

    95 °F

Climate (2021–2026)

Marysville Municipal Airport (26.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    66.6 °F
Get WillyWeather+ to remove ads