Chehalis Weather Forecast

    • 43
    • 62

    Chance Rain

    • 41
    • 54

    Rain

    • 37
    • 57

    Rain Showers

    • 41
    • 64

    Mostly Cloudy

    • 44
    • 68

    Partly Sunny

    • 43
    • 69

    Partly Sunny

Today 14 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy. A slight chance of Showers early in the afternoon. A chance of Showers late in the afternoon. Highs near 60. South wind to 10 Mph becoming southwest around 10 Mph in the afternoon.

Tonight 14 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy with a chance of Showers until early Morning, then mostly cloudy in the morning. Lows in the lower to mid 40s. Southwest wind to 10 Mph.

Graph Plots Open in Graphs

  • 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

    60 °F

  • Highest 3 May, 2026

    84.2 °F

Climate (2021–Present)

Chehalis-Centralia Airport (1.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
Get WillyWeather+ to remove ads