Chehalis Weather Forecast

    • 51
    • 77

    Increasing Clouds

    • 52
    • 79

    Decreasing Clouds

    • 54
    • 84

    Partly Sunny

    • 59
    • 91

    Partly Sunny

    • 59
    • 92

    Partly Sunny

    • 58
    • 91

    Partly Sunny

    • 56
    • 87

    Partly Sunny

Today 17 Jul Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Areas of fog in the morning. Highs in the 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 17 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Patchy fog after midnight. Areas of fog late in the night. Lows near 50. West wind to 10 Mph in the evening becoming light.

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Chehalis Temperature Statistics

July Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 9 July, 2026

    46.4 °F

  • Average July

    63.2 °F

  • Highest 6 July, 2026

    86 °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 °F

  • Average High 2021–2026

    61.4 °F
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