Chehalis Weather Forecast

    • 51
    • 75

    Increasing Clouds

    • 41
    • 62

    Rain

    • 39
    • 60

    Slight Chance Rain

    • 37
    • 64

    Sunny

    • 39
    • 66

    Partly Sunny

    • 44
    • 62

    Chance Rain

    • 41
    • 63

    Partly Sunny

Today 8 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Highs in the mid 60s.

Tonight 8 Oct Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s to mid 50s. Northwest wind to 10 Mph becoming southwest with Gusts to 30 Mph after midnight.

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Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 October, 2026

    46.4 °F

  • Average October

    58.5 °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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