Chehalis Weather Forecast

    • 49
    • 59

    Rain

    • 50
    • 57

    Rain

    • 35
    • 57

    Rain

    • 31
    • 52

    Slight Chance Rain/Snow

    • 33
    • 53

    Partly Sunny

    • 37
    • 54

    Rain Likely

Today 18 Mar Lowlands of Lewis and Southern Thurston Counties

Rain likely in the Morning, then rain at Times in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the mid 50s to lower 60s. South wind 10 to 15 Mph.

Tonight 18 Mar Lowlands of Lewis and Southern Thurston Counties

A chance of rain in the Evening, then rain likely after midnight. Rain at Times in the morning. Rainfall Amounts a tenth to a quarter of an inch possible. Lows near 50. South wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

March Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 2 March, 2026

    30.2 °F

  • Average March

    44.3 °F

  • Highest 2 March, 2026

    60.8 °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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