Chehalis Weather Forecast

    • 47
    • 76

    Decreasing Clouds

    • 46
    • 59

    Rain Likely

    • 41
    • 56

    Rain Likely

    • 41
    • 66

    Mostly Sunny

    • 41
    • 70

    Mostly Sunny

    • 43
    • 71

    Mostly Sunny

Today 20 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy until late afternoon then becoming mostly sunny. Highs in the 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 20 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. A chance of rain. 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

    49.8 °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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