Chehalis Weather Forecast

    • 41
    • 58

    Chance Rain

    • 40
    • 58

    Rain

    • 35
    • 55

    Rain

    • 35
    • 52

    Rain

    • 33
    • 55

    Chance Rain

    • 34
    • 56

    Mostly Cloudy

Today 26 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Showers likely in the Morning, then a chance of Showers late in the morning. A slight chance of Showers in the afternoon. Patchy fog early in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid to upper 50s. Light wind.

Tonight 26 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy with a chance of Showers. Lows near 40. Light wind becoming south to 10 Mph after midnight.

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Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 24 October, 2026

    32 °F

  • Average October

    53.6 °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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