West Side Highway Weather Forecast

    • 33
    • 52

    Becoming Sunny

    • 35
    • 54

    Partly Sunny

    • 44
    • 54

    Mostly Cloudy

    • 40
    • 53

    Rain

    • 35
    • 53

    Rain

    • 34
    • 53

    Chance Rain

    • 36
    • 58

    Partly Sunny

Today 21 Mar Cowlitz County Lowlands

Mostly sunny. Highs in the lower 50s. Northwest wind 5 to 10 Mph.

Tonight 21 Mar Cowlitz County Lowlands

Mostly clear. Widespread frost after midnight. Lows in the lower 30s. Northwest wind 5 to 10 Mph this Evening, becoming light and variable.

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  • Temperature Real-Time

West Side Highway Temperature Statistics

March Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 10 March, 2026

    32 °F

  • Average March

    47.3 °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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