Chehalis Weather Forecast

    • 52
    • 89

    Increasing Clouds

    • 55
    • 87

    Rain Showers

    • 52
    • 75

    Rain

    • 52
    • 80

    Partly Sunny

    • 53
    • 83

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 59
    • 93

    Partly Sunny

Today 14 Jul Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs in the 80s. Light wind.

Tonight 14 Jul Lowlands of Lewis and Southern Thurston Counties

Clear in the evening then becoming partly cloudy. Lows in the lower 50s. Northwest wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 9 July, 2026

    46.4 °F

  • Average July

    62.5 °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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