Columbia River - Ryan Island Weather Forecast

    • 52
    • 68

    Chance Rain Showers

    • 56
    • 69

    Partly Sunny

    • 55
    • 66

    Mostly Cloudy

    • 54
    • 73

    Partly Sunny

    • 58
    • 79

    Partly Sunny

    • 57
    • 72

    Slight Chance Rain

Today 5 Sep Willapa and Wahkiakum Lowlands

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs around 70. Winds light. Chance of rain 40 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 5 Sep Willapa and Wahkiakum Lowlands

Mostly cloudy. Lows in the lower 50s. Winds light.

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Columbia River - Ryan Island Temperature Statistics

September Temperature

Astoria, Astoria Regional Airport (22.4 miles)

  • Lowest 2 September, 2026

    57 °F

  • Average September

    61.5 °F

  • Highest 1 September, 2026

    68.6 °F

Climate (2021–2026)

Astoria, Astoria Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    59.9 °F
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