Chehalis Weather Forecast

    • 51
    • 79

    Mostly Sunny

    • 50
    • 82

    Partly Sunny

    • 40
    • 64

    Mostly Cloudy

    • 40
    • 65

    Partly Sunny

    • 42
    • 70

    Partly Sunny

    • 51
    • 79

    Partly Sunny

Today 27 May Lowlands of Lewis and Southern Thurston Counties

Sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s. Light wind becoming north to 10 Mph in the afternoon.

Tonight 27 May Lowlands of Lewis and Southern Thurston Counties

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

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  • Temperature Real-Time

Chehalis Temperature Statistics

May Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 17 May, 2026

    35.6 °F

  • Average May

    57.3 °F

  • Highest 3 May, 2026

    84.2 °F

Climate (2021–Present)

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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