West Side Highway Weather Forecast

    • 30
    • 49

    Rain

    • 32
    • 53

    Mostly Sunny

    • 40
    • 58

    Rain

    • 38
    • 49

    Rain

    • 36
    • 51

    Rain

    • 37
    • 56

    Slight Chance Rain

Today 29 Mar Cowlitz County Lowlands

Mostly cloudy. A chance of rain in the Morning, then rain in the afternoon. Highs in the lower 50s. Winds Light, becoming west 5 to 10 Mph in the afternoon. Chance of rain 90 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 29 Mar Cowlitz County Lowlands

Mostly cloudy in the Evening, then clearing. Areas of frost in the Evening, then widespread frost with patchy fog after midnight. Lows around 30. Northwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Side Highway Temperature Statistics

March Temperature

Southwest Washington Regional Airport (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 (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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