Chehalis Weather Forecast

    • 54
    • 78

    Increasing Clouds

    • 47
    • 75

    Mostly Cloudy

    • 49
    • 77

    Partly Sunny

    • 50
    • 74

    Partly Sunny

    • 48
    • 73

    Partly Sunny

    • 51
    • 80

    Partly Sunny

Today 7 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 7 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Lows in the lower to mid 50s. West wind to 10 Mph with Gusts to 20 Mph becoming southwest after midnight.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 5 July, 2026

    50 °F

  • Average July

    61.4 °F

  • Highest 5 July, 2026

    77 °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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