West Side Highway Weather Forecast

    • 40
    • 64

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 47
    • 71

    Rain Showers Likely

    • 43
    • 55

    Rain Showers Likely

    • 41
    • 53

    Rain Likely

    • 40
    • 56

    Slight Chance Rain

Today 8 Apr Cowlitz County Lowlands

Patchy fog and frost this morning. Sunny. Highs in the upper 60s. Winds light.

Tonight 8 Apr Cowlitz County Lowlands

Mostly clear. Lows in the upper 30s. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Side Highway Temperature Statistics

April Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 4 April, 2026

    37.9 °F

  • Average April

    53.2 °F

  • Highest 5 April, 2026

    79 °F

Climate (2021–Present)

Southwest Washington Regional Airport (5 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.5 °F
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