Chehalis Weather Forecast

    • 47
    • 75

    Decreasing Clouds

    • 47
    • 75

    Mostly Cloudy

    • 47
    • 61

    Rain Likely

    • 42
    • 58

    Chance Rain

    • 39
    • 65

    Partly Sunny

    • 42
    • 69

    Mostly Sunny

Today 19 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Highs in the lower to mid 70s. Light wind.

Tonight 19 Apr Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid to upper 40s. West wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

April Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 16 April, 2026

    32 °F

  • Average April

    49.6 °F

  • Highest 6 April, 2026

    75.2 °F

Climate (2021–Present)

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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