Chehalis Weather Forecast

    • 44
    • 73

    Becoming Sunny

    • 49
    • 76

    Chance Rain

    • 35
    • 64

    Chance Rain

    • 37
    • 62

    Mostly Cloudy

    • 36
    • 60

    Chance Rain

    • 36
    • 62

    Partly Sunny

Today 15 Oct Lowlands of Lewis and Southern Thurston Counties

Partly sunny in the morning then becoming sunny. Patchy fog in the morning. Highs in the 70s. Light wind.

Tonight 15 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the mid 40s to lower 50s. North wind to 10 Mph with Gusts to 25 Mph.

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  • Temperature Real-Time

Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 11 October, 2026

    35.6 °F

  • Average October

    55.7 °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

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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