Chehalis Weather Forecast

    • 50
    • 64

    Rain Likely

    • 48
    • 65

    Rain Showers Likely

    • 49
    • 70

    Chance Rain Showers

    • 51
    • 74

    Partly Sunny

    • 52
    • 78

    Partly Sunny

    • 53
    • 76

    Mostly Cloudy

    • 53
    • 76

    Partly Sunny

Today 2 Sep Lowlands of Lewis and Southern Thurston Counties

A chance of rain late in the morning. Rain early in the Afternoon, then a chance of rain late in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the 60s. South wind 10 to 20 Mph.

Tonight 2 Sep Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy with a chance of rain until early Morning, then mostly cloudy with rain likely late in the night. Rainfall Amounts less than a tenth of an inch likely. Lows in the mid 40s to lower 50s. South wind 10 to 15 Mph with Gusts to 30 Mph.

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Chehalis Temperature Statistics

September Temperature

Chehalis-Centralia Airport (1.2 miles)

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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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