Chehalis Weather Forecast

    • 58
    • 87

    Patchy Smoke

    • 54
    • 87

    Partly Sunny

    • 54
    • 79

    Partly Sunny

    • 52
    • 74

    Partly Sunny

    • 51
    • 74

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 24 Aug Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs in the 80s. North wind to 10 Mph. Gusts to 20 Mph in the afternoon.

Tonight 24 Aug Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Patchy smoke until early morning. Lows in the mid to upper 50s. North wind to 10 Mph in the evening becoming light.

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Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 3 August, 2026

    48.2 °F

  • Average August

    65.7 °F

  • Highest 5 August, 2026

    89.6 °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 °F

  • Average High 2021–2026

    61.3 °F
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