Chehalis Weather Forecast

    • 47
    • 61

    Rain Likely

    • 44
    • 62

    Chance Rain

    • 41
    • 57

    Rain Showers

    • 38
    • 59

    Rain Showers Likely

    • 40
    • 63

    Mostly Cloudy

    • 44
    • 68

    Partly Sunny

Today 13 May Lowlands of Lewis and Southern Thurston Counties

Showers in the Morning, then Showers likely early in the afternoon. A chance of Showers late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs near 60. Southwest wind to 10 Mph increasing to 10 to 15 Mph in the afternoon. Gusts to 25 Mph.

Tonight 13 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. A chance of Showers in the Evening, then a slight chance of Showers after midnight. Lows in the mid to upper 40s. Southwest wind 10 to 15 Mph with Gusts to 25 Mph decreasing to 10 Mph or less after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

May Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 1 May, 2026

    44.6 °F

  • Average May

    59.7 °F

  • Highest 3 May, 2026

    84.2 °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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