Chehalis Weather Forecast

    • 39
    • 58

    Decreasing Clouds

    • 39
    • 56

    Mostly Cloudy

    • 50
    • 59

    Rain

    • 39
    • 58

    Rain

    • 39
    • 57

    Slight Chance Rain

    • 40
    • 55

    Rain Likely

    • 45
    • 56

    Rain Likely

Today 29 Oct Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. A slight chance of Showers in the morning. Highs in the mid to upper 50s. South wind to 10 Mph becoming west in the afternoon.

Tonight 29 Oct Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the mid 30s to lower 40s. Light wind becoming north to 10 Mph with Gusts to 20 Mph after midnight.

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Chehalis Temperature Statistics

October Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 15 October, 2025

    32 °F

  • Average October

    51.8 °F

  • Highest 7 October, 2025

    78.8 °F

Climate (2020–Present)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    61.3 °F
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