Chehalis Weather Forecast

    • 29
    • 42

    Rain/Snow

    • 24
    • 43

    Chance Snow

    • 32
    • 44

    Rain/Snow Likely

    • 35
    • 49

    Rain Likely

    • 38
    • 52

    Rain

    • 36
    • 49

    Rain

Today 18 Feb Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Patchy fog in the morning. A slight chance of rain Showers and a chance of light freezing rain in the morning. A slight chance of snow Showers through the day. Rain Showers likely in the afternoon. Snow level near 500 feet increasing to 1500 feet in the afternoon. No snow accumulation. Highs near 40. Light wind becoming south to 10 Mph in the afternoon.

Tonight 18 Feb Lowlands of Lewis and Southern Thurston Counties

Rain and snow Showers likely in the Evening, then a chance of rain Showers, snow Showers and light freezing rain after midnight. Patchy fog in the morning. Snow level near 1500 feet decreasing to 1000 feet after midnight. No snow accumulation. Lows near 30. Light wind.

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Chehalis Temperature Statistics

February Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 16 February, 2026

    28.4 °F

  • Average February

    43.6 °F

  • Highest 4 February, 2026

    66.2 °F

Climate (2021–Present)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.3 °F
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