Columbia River - Grassy Island Weather Forecast

    • 43
    • 54

    Rain Showers Likely

    • 38
    • 49

    Rain Showers

    • 37
    • 52

    Chance Rain/Snow

    • 40
    • 60

    Partly Sunny

    • 45
    • 60

    Mostly Cloudy

    • 42
    • 58

    Rain Likely

    • 43
    • 56

    Rain Likely

Today 24 Mar Clatsop County Coast

Mostly cloudy with a 50 percent chance of rain. Breezy with Highs in the mid 50s. Southwest wind 20 to 25 Mph with Gusts up to 45 Mph. Rainfall Amounts around a tenth of an inch.

Tonight 24 Mar Clatsop County Coast

Mostly cloudy with a 50 percent chance of Showers. Lows in the lower 40s. Southwest wind 10 to 15 Mph. Rainfall Amounts less than a tenth of an inch.

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Columbia River - Grassy Island Temperature Statistics

March Temperature

Astoria, Astoria Regional Airport (18.6 miles)

  • Lowest 10 March, 2026

    31.6 °F

  • Average March

    47.8 °F

  • Highest 16 March, 2026

    61.6 °F

Climate (2021–Present)

Astoria, Astoria Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    59.7 °F
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