Mount St Helens Weather Forecast

    • 40
    • 48

    Increasing Clouds

    • 37
    • 43

    Rain/Snow Likely

    • 37
    • 41

    Rain Showers

    • 30
    • 40

    Snow Showers

    • 27
    • 33

    Snow Showers

    • 26
    • 29

    Snow Showers

Today 21 Oct South Washington Cascades

Sunny. Free air freezing level 11000 feet. Winds light.

Tonight 21 Oct South Washington Cascades

Mostly clear. Free air freezing level 12000 feet. East wind 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount St Helens Temperature Statistics

October Temperature

Southwest Washington Regional Airport (33.6 miles)

  • Lowest 15 October, 2025

    32 °F

  • Average October

    54.4 °F

  • Highest 7 October, 2025

    80.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (33.6 miles)

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

  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
Get WillyWeather+ to remove ads