Mount St Helens Weather Forecast

    • 41
    • 54

    Sunny

    • 31
    • 49

    Rain/Snow

    • 26
    • 33

    Chance Snow Showers

    • 28
    • 39

    Breezy

    • 36
    • 51

    Mostly Sunny

    • 38
    • 56

    Mostly Sunny

    • 33
    • 53

    Partly Sunny

Today 1 May South Washington Cascades

Sunny. Free air freezing level 13000 feet. Southeast wind 10 to 15 Mph.

Tonight 1 May South Washington Cascades

Clear. Free air freezing level 13000 Feet, decreasing to free air freezing level 12000 feet after midnight. Southeast wind 5 to 10 Mph.

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Mount St Helens Temperature Statistics

May Temperature

Southwest Washington Regional Airport (33.6 miles)

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Climate (2020–Present)

Southwest Washington Regional Airport (33.6 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.1 °F
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