Chehalis Weather Forecast

    • 50
    • 80

    Becoming Sunny

    • 49
    • 85

    Mostly Sunny

    • 52
    • 79

    Partly Sunny

    • 49
    • 73

    Partly Sunny

    • 48
    • 79

    Mostly Sunny

    • 51
    • 77

    Partly Sunny

Today 5 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the morning then becoming sunny. Highs near 80. North wind to 10 Mph. Gusts to 20 Mph in the afternoon.

Tonight 5 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows near 50. North wind to 10 Mph in the evening becoming light. Gusts to 20 Mph.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 July, 2026

    51.8 °F

  • Average July

    60.8 °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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