Chehalis Weather Forecast

    • 37
    • 59

    Mostly Cloudy

    • 47
    • 69

    Slight Chance Rain

    • 47
    • 72

    Mostly Cloudy

    • 46
    • 73

    Chance Rain

    • 45
    • 64

    Chance Rain

    • 41
    • 60

    Chance Rain

Today 17 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Patchy frost in the morning. Highs in the mid to upper 50s. Light wind.

Tonight 17 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Lows in the mid to upper 30s. Light wind.

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Chehalis Temperature Statistics

April Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 8 April, 2026

    33.8 °F

  • Average April

    50.2 °F

  • Highest 6 April, 2026

    75.2 °F

Climate (2021–Present)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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