Chehalis Weather Forecast

    • 60
    • 89

    Mostly Cloudy

    • 61
    • 95

    Mostly Cloudy

    • 59
    • 96

    Partly Sunny

    • 56
    • 88

    Partly Sunny

    • 53
    • 81

    Partly Sunny

    • 52
    • 79

    Partly Sunny

Today 20 Jul Lowlands of Lewis and Southern Thurston Counties

Cloudy in the morning then becoming partly sunny. Highs in the mid 80s to lower 90s. Light wind.

Tonight 20 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Lows near 60. 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

    62.9 °F

  • Highest 6 July, 2026

    86 °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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