Chehalis Weather Forecast

    • 55
    • 81

    Increasing Clouds

    • 51
    • 75

    Chance Rain

    • 49
    • 79

    Partly Sunny

    • 49
    • 82

    Mostly Sunny

    • 53
    • 85

    Mostly Sunny

    • 52
    • 78

    Partly Sunny

Today 27 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Areas of fog in the morning. Highs near 80. Light wind becoming southwest to 10 Mph in the afternoon.

Tonight 27 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the lower to mid 50s. 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 9 July, 2026

    46.4 °F

  • Average July

    64.6 °F

  • Highest 21 July, 2026

    95 °F

Climate (2021–2026)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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