Columbia River - Wallace Slough Entrance Weather Forecast

    • 59
    • 71

    Slight Chance Rain Showers

    • 57
    • 71

    Decreasing Clouds

    • 59
    • 81

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

    • 56
    • 70

    Mostly Cloudy

    • 54
    • 69

    Partly Sunny

    • 55
    • 70

    Partly Sunny

Today 22 Aug Lower Columbia River

Partly sunny. Highs in the upper 70s. Winds light.

Tonight 22 Aug Lower Columbia River

Mostly cloudy. A slight chance of Showers after midnight. Lows in the upper 50s. Winds light. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Wallace Slough Entrance Temperature Statistics

August Temperature

Southwest Washington Regional Airport (18.6 miles)

  • Lowest 9 August, 2026

    54 °F

  • Average August

    68 °F

  • Highest 5 August, 2026

    93.9 °F

Climate (2021–2026)

Southwest Washington Regional Airport (18.6 miles)

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

  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.4 °F
Get WillyWeather+ to remove ads