Columbia River - Coal Creek Slough Entrance Weather Forecast

    • 45
    • 52

    Rain Showers

    • 42
    • 54

    Rain Showers

    • 44
    • 61

    Mostly Cloudy

    • 45
    • 64

    Mostly Cloudy

    • 47
    • 66

    Mostly Cloudy

    • 48
    • 67

    Partly Sunny

Today 15 May Cowlitz County Lowlands

Mostly cloudy with a chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the mid 50s. Southwest wind 5 to 10 Mph. Chance of rain 50 percent. Rainfall Amounts a tenth to a quarter of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 15 May Cowlitz County Lowlands

Showers with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 40s. Southwest wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts a tenth to a quarter of an Inch, except higher Amounts possible in Thunderstorms.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Coal Creek Slough Entrance Temperature Statistics

May Temperature

Southwest Washington Regional Airport (11.8 miles)

  • Lowest 9 May, 2026

    44.1 °F

  • Average May

    61.5 °F

  • Highest 3 May, 2026

    91 °F

Climate (2021–Present)

Southwest Washington Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.5 °F
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