Chehalis Weather Forecast

    • 50
    • 74

    Decreasing Clouds

    • 48
    • 77

    Becoming Sunny

    • 50
    • 84

    Sunny

    • 52
    • 86

    Mostly Sunny

    • 53
    • 84

    Partly Sunny

    • 54
    • 81

    Partly Sunny

    • 55
    • 87

    Mostly Sunny

Today 11 Jul Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Highs in the lower to mid 70s. Light wind.

Tonight 11 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the evening then becoming partly cloudy. Patchy fog late in the night. Lows near 50. Southwest wind to 10 Mph becoming south after midnight.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 9 July, 2026

    46.4 °F

  • Average July

    62.2 °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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