Seaside Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain Likely

Today 18 Dec Clatsop County Coast

Rain, windy with Highs in the upper 50s. South wind 20 to 25 Mph, becoming southwest 20 to 30 Mph this afternoon. Gusts up to 45 Mph, except 55 Mph near Beaches and Headlands. Chance of rain near 100 percent. Rainfall Amounts a half to three Quarters of an inch.

Tonight 18 Dec Clatsop County Coast

Rain. Lows in the lower 40s. West wind 15 to 20 Mph. Chance of rain near 100 percent. Rainfall Amounts a tenth to a quarter of an inch.

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Seaside Temperature Statistics

December Temperature

Astoria, Astoria Regional Airport (11.2 miles)

  • Lowest 1 December, 2025

    37.4 °F

  • Average December

    51.1 °F

  • Highest 15 December, 2025

    57.9 °F

Climate (2020–Present)

Astoria, Astoria Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    59.6 °F
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