Chehalis Weather Forecast

    • 31
    • 42

    Areas Fog

    • 30
    • 45

    Areas Freezing Fog

    • 31
    • 46

    Patchy Fog

    • 34
    • 47

    Mostly Cloudy

    • 39
    • 47

    Rain Likely

    • 38
    • 48

    Chance Rain

    • 37
    • 47

    Chance Rain

Today 28 Dec Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Areas of fog in the Morning, then patchy fog in the afternoon. Highs in the lower to mid 40s. Light wind.

Tonight 28 Dec Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. Patchy fog. Lows near 30. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

December Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 December, 2025

    33.8 °F

  • Average December

    46.6 °F

  • Highest 15 December, 2025

    60.8 °F

Climate (2020–Present)

Chehalis-Centralia Airport (1.2 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    61.3 °F
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