Chehalis Weather Forecast

    • 49
    • 66

    Increasing Clouds

    • 47
    • 66

    Mostly Cloudy

    • 50
    • 69

    Mostly Cloudy

    • 48
    • 74

    Partly Sunny

    • 49
    • 78

    Mostly Sunny

    • 50
    • 79

    Partly Sunny

Today 30 Jun Lowlands of Lewis and Southern Thurston Counties

Cloudy until late afternoon then becoming partly sunny. Highs in the 60s. Southwest wind to 10 Mph becoming west in the afternoon.

Tonight 30 Jun Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. West wind 10 to 15 Mph becoming southwest after midnight.

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Chehalis Temperature Statistics

June Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 June, 2026

    41 °F

  • Average June

    62 °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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