Chehalis Weather Forecast

    • 50
    • 68

    Decreasing Clouds

    • 49
    • 66

    Mostly Cloudy

    • 47
    • 65

    Mostly Cloudy

    • 48
    • 68

    Mostly Cloudy

    • 49
    • 73

    Partly Sunny

    • 50
    • 79

    Partly Sunny

Today 29 Jun Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Patchy fog in the morning. Highs in the mid to upper 60s. Light wind becoming southwest to 10 Mph in the afternoon.

Tonight 29 Jun Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Lows near 50. West wind to 10 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

    62.1 °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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