Chehalis Weather Forecast

    • 49
    • 74

    Increasing Clouds

    • 52
    • 84

    Mostly Sunny

    • 59
    • 92

    Mostly Sunny

    • 57
    • 96

    Mostly Sunny

    • 52
    • 89

    Mostly Sunny

    • 51
    • 80

    Chance Rain

Today 20 Jun Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Highs in the lower to mid 70s. South wind to 10 Mph becoming southwest around 10 Mph with Gusts to 20 Mph in the afternoon.

Tonight 20 Jun Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Patchy fog in the morning. Lows in the mid 40s to lower 50s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Chehalis Temperature Statistics

June Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 June, 2026

    41 °F

  • Average June

    60.8 °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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