Chehalis Weather Forecast

    • 51
    • 74

    Increasing Clouds

    • 49
    • 74

    Partly Sunny

    • 48
    • 77

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 53
    • 89

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

Today 10 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Patchy fog in the morning. Highs in the 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 10 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows near 50. West wind to 10 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

    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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