Chehalis Weather Forecast

    • 34
    • 62

    Mostly Cloudy

    • 32
    • 61

    Partly Sunny

    • 35
    • 58

    Chance Rain

    • 36
    • 59

    Chance Rain

    • 36
    • 61

    Slight Chance Rain

    • 35
    • 61

    Slight Chance Rain

Today 22 Oct Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Highs near 60. Light wind becoming north to 10 Mph in the afternoon.

Tonight 22 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the evening then becoming partly cloudy. Lows in the 30s. Northwest wind to 10 Mph in the evening becoming light.

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Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 11 October, 2026

    35.6 °F

  • Average October

    54.8 °F

  • Highest 16 October, 2026

    80.6 °F

Climate (2021–2026)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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