Chehalis Weather Forecast

    • 43
    • 68

    Increasing Clouds

    • 50
    • 74

    Mostly Cloudy

    • 45
    • 61

    Rain

    • 44
    • 65

    Rain Likely

    • 46
    • 72

    Partly Sunny

    • 49
    • 75

    Partly Sunny

    • 42
    • 65

    Partly Sunny

Today 23 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy until late afternoon then becoming mostly sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. Southwest wind to 10 Mph becoming west with Gusts to 20 Mph in the afternoon.

Tonight 23 May Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy then becoming mostly clear in the late evening and early morning then becoming mostly cloudy. Lows in the lower to mid 40s. West wind 10 to 15 Mph with Gusts to 25 Mph becoming south after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

May Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 17 May, 2026

    35.6 °F

  • Average May

    57.3 °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

    43.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
Get WillyWeather+ to remove ads