Chehalis Weather Forecast

    • 48
    • 77

    Sunny

    • 50
    • 85

    Mostly Sunny

    • 53
    • 88

    Mostly Sunny

    • 55
    • 87

    Chance Rain

    • 55
    • 81

    Slight Chance Rain

    • 54
    • 83

    Mostly Sunny

    • 56
    • 88

    Mostly Sunny

Today 12 Jul Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs in the 70s. Light wind.

Tonight 12 Jul Lowlands of Lewis and Southern Thurston Counties

Clear. Lows in the mid to upper 40s. 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

    62.4 °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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