Chehalis Weather Forecast

    • 51
    • 83

    Becoming Sunny

    • 57
    • 90

    Mostly Sunny

    • 56
    • 94

    Partly Sunny

    • 50
    • 88

    Partly Sunny

    • 53
    • 72

    Rain Likely

    • 50
    • 63

    Chance Rain

    • 49
    • 67

    Chance Rain

Today 21 Jun Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 70s to mid 80s. Light wind.

Tonight 21 Jun Lowlands of Lewis and Southern Thurston Counties

Clear. Lows in the lower 50s. Light wind.

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Chehalis Temperature Statistics

June Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 June, 2026

    41 °F

  • Average June

    61.1 °F

  • Highest 15 June, 2026

    91.4 °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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