Chehalis Weather Forecast

    • 55
    • 83

    Sunny

    • 59
    • 93

    Mostly Sunny

    • 58
    • 97

    Hot

    • 56
    • 95

    Mostly Sunny

    • 54
    • 88

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 53
    • 78

    Partly Sunny

Today 3 Aug Lowlands of Lewis and Southern Thurston Counties

Sunny. Patchy fog in the morning. Highs in the upper 70s to mid 80s. North wind to 10 Mph.

Tonight 3 Aug Lowlands of Lewis and Southern Thurston Counties

Clear. Lows in the 50s. North wind to 10 Mph with Gusts to 25 Mph.

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Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 August, 2026

    53.6 °F

  • Average August

    63.8 °F

  • Highest 1 August, 2026

    69.8 °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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