Chehalis Weather Forecast

    • 37
    • 64

    Mostly Sunny

    • 37
    • 65

    Mostly Sunny

    • 45
    • 64

    Mostly Cloudy

    • 46
    • 66

    Mostly Cloudy

    • 44
    • 70

    Partly Sunny

    • 47
    • 71

    Partly Sunny

Today 11 Oct Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs in the lower to mid 60s. Light wind becoming north to 10 Mph in the afternoon.

Tonight 11 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the mid to upper 30s. 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

    58.6 °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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