Chehalis Weather Forecast

    • 43
    • 72

    Mostly Cloudy

    • 49
    • 75

    Rain Likely

    • 44
    • 60

    Rain

    • 44
    • 64

    Chance Rain

    • 45
    • 69

    Mostly Cloudy

    • 47
    • 69

    Mostly Cloudy

Today 23 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the lower to mid 70s. Light wind becoming west to 10 Mph with Gusts to 20 Mph in the afternoon.

Tonight 23 May Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the lower to mid 40s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Chehalis Temperature Statistics

May Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 17 May, 2026

    35.6 °F

  • Average May

    57.1 °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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