Chehalis Weather Forecast

    • 51
    • 79

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

    • 51
    • 71

    Rain Likely

    • 51
    • 74

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 57
    • 90

    Mostly Sunny

Today 30 Jul Lowlands of Lewis and Southern Thurston Counties

Sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s. Light wind.

Tonight 30 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Patchy fog in the morning. Lows near 50. Light wind.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 9 July, 2026

    46.4 °F

  • Average July

    64.7 °F

  • Highest 21 July, 2026

    95 °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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