Wahtum Lake Weather Forecast

    • 47
    • 59

    Mostly Sunny

    • 50
    • 64

    Mostly Sunny

    • 51
    • 68

    Mostly Sunny

    • 46
    • 61

    Partly Sunny

    • 44
    • 56

    Partly Sunny

    • 46
    • 57

    Partly Sunny

Today 18 Sep North Oregon Cascades

Sunny. Free air freezing level 12000 Feet, increasing to free air freezing level 13000 feet in the afternoon. Winds light.

Tonight 18 Sep North Oregon Cascades

Mostly clear. Free air freezing level 13000 feet. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wahtum Lake Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (29.8 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    62.7 °F

  • Highest 9 September, 2026

    88.6 °F

Climate (2021–2026)

Portland, Portland-Troutdale Airport (29.8 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    65.2 °F
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