Chehalis Weather Forecast

    • 49
    • 74

    Becoming Sunny

    • 56
    • 83

    Sunny

    • 60
    • 94

    Mostly Sunny

    • 58
    • 96

    Mostly Sunny

    • 56
    • 91

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

Today 2 Aug Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Highs in the lower to mid 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 2 Aug Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the mid 40s to lower 50s. Northwest wind to 10 Mph in the evening becoming light.

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Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest

  • Average August

  • Highest

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

    61.3 °F
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