Chehalis Weather Forecast

    • 56
    • 87

    Chance Rain

    • 50
    • 71

    Rain Likely

    • 49
    • 75

    Partly Sunny

    • 55
    • 83

    Mostly Sunny

    • 58
    • 91

    Mostly Sunny

    • 56
    • 88

    Mostly Sunny

Today 31 Jul Lowlands of Lewis and Southern Thurston Counties

Sunny. Patchy fog in the morning. Highs in the 80s. Light wind.

Tonight 31 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy until early Morning, then mostly cloudy with a chance of rain in the morning. Lows in the 50s. West wind to 10 Mph becoming southwest after midnight.

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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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