Columbia River - Cowlitz River Entrance Weather Forecast

    • 67
    • 93

    Mostly Sunny

    • 68
    • 94

    Mostly Sunny

    • 62
    • 95

    Mostly Sunny

    • 60
    • 78

    Partly Sunny

    • 58
    • 75

    Mostly Cloudy

    • 59
    • 74

    Mostly Cloudy

Today 10 Aug Cowlitz County Lowlands

Sunny. Highs in the lower 90s. North wind 5 to 10 Mph.

Tonight 10 Aug Cowlitz County Lowlands

Clear. Lows in the mid 60s. North wind 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Cowlitz River Entrance Temperature Statistics

August Temperature

Southwest Washington Regional Airport (1.2 miles)

  • Lowest 8 August, 2025

    50 °F

  • Average August

    65.2 °F

  • Highest 1 August, 2025

    82 °F

Climate (2020–Present)

Southwest Washington Regional Airport (1.2 miles)

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

  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.2 °F
Get WillyWeather+ to remove ads