Chehalis Weather Forecast

    • 56
    • 73

    Decreasing Clouds

    • 53
    • 74

    Mostly Cloudy

    • 54
    • 81

    Partly Sunny

    • 53
    • 77

    Mostly Cloudy

    • 50
    • 79

    Mostly Sunny

    • 51
    • 81

    Mostly Sunny

Today 25 Jul Lowlands of Lewis and Southern Thurston Counties

Cloudy. Patchy fog in the morning. Highs in the lower 70s. South wind 10 to 15 Mph.

Tonight 25 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Patchy fog in the morning. Lows in the 50s. Southwest wind around 10 Mph becoming south 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

    64.5 °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

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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