Chehalis Weather Forecast

    • 55
    • 70

    Increasing Clouds

    • 50
    • 65

    Rain

    • 49
    • 65

    Rain Showers

    • 49
    • 70

    Chance Rain

    • 52
    • 74

    Chance Rain

    • 53
    • 76

    Chance Rain

    • 54
    • 73

    Chance Rain

Today 1 Sep Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. A slight chance of rain in the morning. Patchy fog in the morning. Highs near 70. South wind to 10 Mph becoming southwest around 10 Mph in the afternoon.

Tonight 1 Sep Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Lows in the lower to mid 50s. Southwest wind to 10 Mph becoming south with Gusts to 20 Mph after midnight.

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Chehalis Temperature Statistics

September Temperature

Chehalis-Centralia Airport (1.2 miles)

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  • Average September

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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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