Chehalis Weather Forecast

    • 36
    • 50

    Rain

    • 32
    • 50

    Rain Showers

    • 35
    • 56

    Slight Chance Rain

    • 36
    • 57

    Mostly Cloudy

    • 45
    • 65

    Rain Likely

    • 41
    • 60

    Rain Likely

Today 14 Apr Lowlands of Lewis and Southern Thurston Counties

A slight chance of rain in the Morning, then a chance of rain late in the morning. Rain in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs near 50. South wind 10 to 20 Mph with Gusts to 30 Mph.

Tonight 14 Apr Lowlands of Lewis and Southern Thurston Counties

Rain in the Evening, then rain likely after midnight. A slight chance of rain in the morning. Rainfall Amounts a half inch to one inch possible. Lows in the mid to upper 30s. South wind 10 to 20 Mph with Gusts to 30 Mph becoming southwest to 10 Mph with Gusts to 20 Mph after midnight.

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Chehalis Temperature Statistics

April Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 8 April, 2026

    33.8 °F

  • Average April

    50.9 °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

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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