Wahtum Lake Weather Forecast

    • 40
    • 52

    Decreasing Clouds

    • 50
    • 62

    Mostly Sunny

    • 50
    • 68

    Chance Rain

    • 46
    • 56

    Slight Chance Rain

    • 42
    • 56

    Chance Rain

    • 40
    • 53

    Chance Rain/Snow

Today 10 May North Oregon Cascades

Partly sunny. Free air freezing level 12000 feet. Pass Winds west 10 to 15 Mph. Gusts up to 35 Mph.

Tonight 10 May North Oregon Cascades

Partly cloudy. Free air freezing level 11000 Feet, increasing to free air freezing level 12000 feet after midnight. Pass Winds northwest 10 to 15 Mph with Gusts up to 35 Mph, easing to 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 1 May, 2026

    46.7 °F

  • Average May

    62.8 °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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