Chehalis Weather Forecast

    • 62
    • 95

    Hot

    • 63
    • 98

    Chance Rain

    • 58
    • 80

    Chance Rain

    • 56
    • 81

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 54
    • 78

    Mostly Cloudy

Today 21 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Highs in the 90s. Light wind.

Tonight 21 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the lower to mid 60s. 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

    62.8 °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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