Chehalis Weather Forecast

    • 51
    • 73

    Increasing Clouds

    • 49
    • 69

    Chance Rain

    • 49
    • 71

    Mostly Cloudy

    • 52
    • 76

    Mostly Cloudy

    • 52
    • 72

    Rain Likely

    • 51
    • 64

    Rain Likely

Today 28 Aug Lowlands of Lewis and Southern Thurston Counties

Cloudy in the morning then becoming mostly sunny. Highs in the lower to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 28 Aug Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the morning. Lows in the mid 40s to lower 50s. West wind to 10 Mph becoming south after midnight. Gusts to 20 Mph.

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

    65.9 °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