Chehalis Weather Forecast

    • 48
    • 70

    Increasing Clouds

    • 49
    • 72

    Becoming Sunny

    • 50
    • 75

    Partly Sunny

    • 42
    • 64

    Chance Rain Showers

    • 39
    • 60

    Chance Rain

    • 38
    • 62

    Mostly Sunny

    • 40
    • 63

    Partly Sunny

Today 6 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Highs in the lower to mid 60s.

Tonight 6 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Areas of fog after midnight. Lows in the mid to upper 40s. North wind to 10 Mph with Gusts to 20 Mph.

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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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