St Helens Weather Forecast

    • 55
    • 74

    Decreasing Clouds

    • 56
    • 75

    Partly Sunny

    • 60
    • 80

    Chance Rain

    • 54
    • 69

    Rain Showers Likely

    • 54
    • 70

    Partly Sunny

    • 58
    • 81

    Partly Sunny

Today 11 Sep Lower Columbia River

Partly sunny. Highs in the mid 70s. Northwest wind 5 to 10 Mph.

Tonight 11 Sep Lower Columbia River

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Helens Temperature Statistics

September Temperature

Scappoose Industrial Airpark (6.2 miles)

  • Lowest 8 September, 2025

    53.1 °F

  • Average September

    68.9 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Scappoose Industrial Airpark (6.2 miles)

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  • Average Low 2020–2025

    44 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    63.3 °F
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