Chehalis Weather Forecast

    • 54
    • 90

    Areas Smoke

    • 55
    • 88

    Mostly Sunny

    • 54
    • 89

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 52
    • 80

    Partly Sunny

    • 54
    • 82

    Partly Sunny

    • 54
    • 80

    Partly Sunny

Today 5 Aug Lowlands of Lewis and Southern Thurston Counties

Sunny. Areas of smoke. Highs near 90. Light wind.

Tonight 5 Aug Lowlands of Lewis and Southern Thurston Counties

Clear. Areas of smoke in the Evening, then patchy smoke after midnight. Lows in the 50s. Light wind.

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  • Temperature Real-Time

Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 3 August, 2026

    48.2 °F

  • Average August

    62.9 °F

  • Highest 3 August, 2026

    77 °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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