Wahtum Lake Weather Forecast

    • 50
    • 66

    Partly Cloudy

    • 51
    • 62

    Mostly Sunny

    • 52
    • 68

    Mostly Sunny

    • 51
    • 63

    Chance Rain

    • 47
    • 54

    Slight Chance Rain

    • 52
    • 63

    Mostly Sunny

    • 54
    • 65

    Chance Rain

Today 17 Sep North Oregon Cascades

Sunny. Free air freezing level 14000 Feet, increasing to free air freezing level 15000 feet this afternoon. Winds light.

Tonight 17 Sep North Oregon Cascades

Partly cloudy. Free air freezing level 14000 feet. Pass Winds northwest 5 to 10 Mph.

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  • Temperature Real-Time

Wahtum Lake Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (29.8 miles)

  • Lowest 15 September, 2025

    46.9 °F

  • Average September

    67.2 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (29.8 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.2 °F
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