Wahtum Lake Weather Forecast

    • 38
    • 50

    Increasing Clouds

    • 42
    • 50

    Increasing Clouds

    • 43
    • 54

    Partly Sunny

    • 46
    • 61

    Partly Sunny

    • 46
    • 60

    Mostly Sunny

    • 44
    • 62

    Partly Sunny

    • 42
    • 57

    Mostly Cloudy

Today 18 May North Oregon Cascades

Sunny. Free air freezing level 7500 feet. Pass Winds northwest 5 to 10 Mph.

Tonight 18 May North Oregon Cascades

Mostly clear this Evening, then becoming partly cloudy. Free air freezing level 8000 feet. Pass Winds northwest 5 to 10 Mph, becoming light after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wahtum Lake Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (29.8 miles)

  • Lowest 15 May, 2026

    44.7 °F

  • Average May

    61.5 °F

  • Highest 3 May, 2026

    91.7 °F

Climate (2021–Present)

Portland, Portland-Troutdale Airport (29.8 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.3 °F
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