Chehalis Weather Forecast

    • 38
    • 65

    Increasing Clouds

    • 45
    • 64

    Mostly Cloudy

    • 47
    • 67

    Mostly Cloudy

    • 46
    • 73

    Partly Sunny

    • 49
    • 75

    Partly Sunny

    • 44
    • 66

    Slight Chance Rain

Today 12 Oct Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs in the 60s. Light wind.

Tonight 12 Oct Lowlands of Lewis and Southern Thurston Counties

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

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  • Temperature Real-Time

Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 October, 2026

    46.4 °F

  • Average October

    58.3 °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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