Chehalis Weather Forecast

    • 54
    • 93

    Areas Smoke

    • 54
    • 88

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

    • 52
    • 81

    Partly Sunny

    • 53
    • 82

    Partly Sunny

    • 54
    • 80

    Partly Sunny

    • 54
    • 79

    Partly Sunny

Today 6 Aug Lowlands of Lewis and Southern Thurston Counties

Sunny. Areas of smoke. Highs in the upper 80s to mid 90s. Light wind.

Tonight 6 Aug Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Patchy smoke in the evening. Lows in the lower to mid 50s. Light wind.

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Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 3 August, 2026

    48.2 °F

  • Average August

    64.1 °F

  • Highest 4 August, 2026

    84.2 °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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