Columbia River - Tronson Island Weather Forecast

    • 53
    • 63

    Rain

    • 55
    • 64

    Chance Rain

    • 51
    • 64

    Partly Sunny

    • 53
    • 70

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

Today 12 Sep Clatsop County Coast

Mostly cloudy. A slight chance of Showers in the Morning, then Showers likely with a slight chance of Thunderstorms in the afternoon. Highs in the mid 60s. Winds light. Chance of rain 70 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 12 Sep Clatsop County Coast

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 50s. Winds light. Chance of rain 70 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Columbia River - Tronson Island Temperature Statistics

September Temperature

Astoria, Astoria Regional Airport (18 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    60.9 °F

  • Highest 9 September, 2026

    77 °F

Climate (2021–2026)

Astoria, Astoria Regional Airport (18 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    59.9 °F
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