Chehalis Weather Forecast

    • 47
    • 75

    Increasing Clouds

    • 51
    • 77

    Partly Sunny

    • 50
    • 74

    Mostly Cloudy

    • 48
    • 74

    Partly Sunny

    • 48
    • 78

    Mostly Sunny

    • 50
    • 84

    Mostly Sunny

    • 52
    • 85

    Mostly Sunny

Today 8 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy until late afternoon then becoming mostly sunny. Highs in the 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 8 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly clear until early morning then becoming mostly cloudy. Lows in the 40s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 5 July, 2026

    50 °F

  • Average July

    62.3 °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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