Columbia River - Grassy Island Weather Forecast

    • 55
    • 65

    Mostly Cloudy

    • 56
    • 64

    Mostly Cloudy

    • 55
    • 64

    Mostly Cloudy

    • 56
    • 67

    Mostly Cloudy

    • 57
    • 70

    Partly Sunny

    • 58
    • 72

    Partly Sunny

Today 18 Jul Clatsop County Coast

Mostly cloudy. Areas of fog. Highs in the upper 60s. West wind 5 to 10 Mph.

Tonight 18 Jul Clatsop County Coast

Patchy fog in the evening. Mostly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 Mph.

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Columbia River - Grassy Island Temperature Statistics

July Temperature

Astoria, Astoria Regional Airport (18.6 miles)

  • Lowest 6 July, 2025

    47.6 °F

  • Average July

    60.3 °F

  • Highest 16 July, 2025

    78.1 °F

Climate (2020–Present)

Astoria, Astoria Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    59.5 °F
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