Chehalis Weather Forecast

    • 48
    • 75

    Decreasing Clouds

    • 50
    • 80

    Mostly Sunny

    • 49
    • 86

    Mostly Sunny

    • 52
    • 78

    Mostly Cloudy

    • 48
    • 72

    Partly Sunny

    • 48
    • 76

    Mostly Sunny

Today 4 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the morning then becoming sunny. Highs in the lower to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 4 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the mid to upper 40s. West wind to 10 Mph in the evening becoming light.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 July, 2026

    51.8 °F

  • Average July

    59.7 °F

  • Highest 2 July, 2026

    69.8 °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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