New West Side Weather Forecast

    • 31
    • 51

    Rain

    • 33
    • 55

    Partly Sunny

    • 41
    • 59

    Rain

    • 40
    • 50

    Rain

    • 37
    • 54

    Rain Likely

    • 37
    • 58

    Partly Sunny

    • 41
    • 63

    Mostly Sunny

Today 29 Mar Cowlitz County Lowlands

Rain. Highs in the lower 50s. West wind 5 to 10 Mph. Chance of rain 90 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 29 Mar Cowlitz County Lowlands

Mostly cloudy with a slight chance of rain in the Evening, then partly cloudy after midnight. Areas of frost in the Evening, then widespread frost after midnight. Lows around 30. North wind 5 to 10 Mph. Chance of rain 20 percent.

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New West Side Temperature Statistics

March Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 22 March, 2026

    28.9 °F

  • Average March

    47.4 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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