Longview 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

Today 13 Dec Cowlitz County Lowlands

Patchy fog this morning. Mostly sunny. Highs in the upper 50s. Winds light.

Tonight 13 Dec Cowlitz County Lowlands

Partly cloudy in the Evening, then mostly cloudy with rain after midnight. Lows in the mid 40s. Winds light. Chance of rain 90 percent. Rainfall Amounts less than a tenth of an inch.

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Longview Temperature Statistics

December Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 1 December, 2025

    35.1 °F

  • Average December

    48.4 °F

  • Highest 10 December, 2025

    57.9 °F

Climate (2020–Present)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    62.4 °F
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