Chehalis Weather Forecast

    • 50
    • 76

    Increasing Clouds

    • 45
    • 62

    Rain Showers

    • 45
    • 65

    Rain Likely

    • 46
    • 73

    Partly Sunny

    • 49
    • 77

    Partly Sunny

    • 42
    • 65

    Partly Sunny

Today 24 May Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Highs in the lower to mid 70s. Light wind.

Tonight 24 May Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows near 50. Light wind.

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  • Temperature Forecast NOAA

  • 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

    43.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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