Chehalis Weather Forecast

    • 54
    • 76

    Gradual Clearing

    • 57
    • 85

    Patchy Smoke

    • 56
    • 89

    Partly Sunny

    • 53
    • 77

    Partly Sunny

    • 50
    • 75

    Partly Sunny

    • 50
    • 76

    Partly Sunny

Today 23 Aug Lowlands of Lewis and Southern Thurston Counties

Mostly cloudy until late afternoon then becoming mostly sunny. Highs in the 70s. South wind around 10 Mph becoming west in the afternoon.

Tonight 23 Aug Lowlands of Lewis and Southern Thurston Counties

Mostly clear. Lows in the lower to mid 50s. Northwest wind around 10 Mph becoming north with Gusts to 20 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Chehalis Temperature Statistics

August Temperature

Chehalis-Centralia Airport (1.2 miles)

  • Lowest 3 August, 2026

    48.2 °F

  • Average August

    65.8 °F

  • Highest 5 August, 2026

    89.6 °F

Climate (2021–2026)

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 °F

  • Average High 2021–2026

    61.3 °F
Get WillyWeather+ to remove ads