Chehalis Weather Forecast

    • 53
    • 75

    Gradual Clearing

    • 54
    • 81

    Partly Sunny

    • 51
    • 75

    Chance Rain

    • 49
    • 79

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

    • 53
    • 84

    Partly Sunny

Today 26 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Highs in the lower to mid 70s. South wind to 10 Mph.

Tonight 26 Jul Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy in the evening then becoming partly cloudy. Patchy fog after midnight. Areas of fog in the morning. Lows in the lower to mid 50s. Northwest 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

    64.6 °F

  • Highest 21 July, 2026

    95 °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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