Westport Slough - Kerry Slough Weather Forecast

    • 47
    • 66

    Decreasing Clouds

    • 50
    • 77

    Mostly Sunny

    • 50
    • 71

    Partly Sunny

    • 46
    • 69

    Partly Sunny

    • 48
    • 68

    Rain Likely

    • 46
    • 58

    Rain Likely

    • 47
    • 61

    Chance Rain

Today 20 May Lower Columbia River

Mostly sunny. Highs in the lower 70s. Northwest wind 5 to 10 Mph.

Tonight 20 May Lower Columbia River

Partly cloudy in the Evening, then clearing. Lows around 50. Northwest wind 5 to 10 Mph.

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Westport Slough - Kerry Slough Temperature Statistics

May Temperature

Southwest Washington Regional Airport (21.7 miles)

  • Lowest 17 May, 2026

    39.9 °F

  • Average May

    59 °F

  • Highest 3 May, 2026

    91 °F

Climate (2021–Present)

Southwest Washington Regional Airport (21.7 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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