Chehalis Weather Forecast

    • 45
    • 70

    Slight Chance Rain

    • 47
    • 74

    Mostly Cloudy

    • 47
    • 73

    Chance Rain

    • 47
    • 65

    Chance Rain

    • 43
    • 58

    Chance Rain

    • 41
    • 61

    Partly Sunny

Today 18 Apr Lowlands of Lewis and Southern Thurston Counties

Mostly sunny. Highs near 70. Light wind.

Tonight 18 Apr Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the lower to mid 40s. Light wind.

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  • 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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