Youngs River - Grant Island Weather Forecast

    • 50
    • 66

    Rain Likely

    • 54
    • 66

    Chance Rain

    • 50
    • 67

    Mostly Cloudy

    • 49
    • 70

    Partly Sunny

    • 54
    • 78

    Sunny

    • 55
    • 81

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

Today 12 Sep Clatsop County Coast

Showers likely with a slight chance of Thunderstorms. Highs in the mid 60s. Winds light. Chance of rain 70 percent. Rainfall Amounts less than 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 this Evening, then a chance of rain 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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Youngs River - Grant Island Temperature Statistics

September Temperature

Astoria, Astoria Regional Airport (4.3 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    60.8 °F

  • Highest 9 September, 2026

    77 °F

Climate (2021–2026)

Astoria, Astoria Regional Airport (4.3 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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