Chehalis Weather Forecast

    • 39
    • 60

    Slight Chance Rain

    • 37
    • 64

    Mostly Sunny

    • 39
    • 65

    Mostly Sunny

    • 45
    • 64

    Mostly Cloudy

    • 44
    • 65

    Mostly Cloudy

    • 44
    • 67

    Partly Sunny

Today 10 Oct Lowlands of Lewis and Southern Thurston Counties

Partly sunny. A slight chance of rain until late afternoon. Highs in the mid 50s to lower 60s. Light wind.

Tonight 10 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the mid 30s to lower 40s. Light wind.

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Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 October, 2026

    46.4 °F

  • Average October

    58.7 °F

  • Highest 4 October, 2026

    73.4 °F

Climate (2021–2026)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.3 °F
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