Wahtum Lake Weather Forecast

    • 41
    • 64

    Breezy

    • 35
    • 46

    Chance Rain Showers

    • 35
    • 46

    Partly Sunny

    • 40
    • 52

    Mostly Sunny

    • 51
    • 64

    Mostly Sunny

    • 55
    • 69

    Partly Sunny

Today 28 May North Oregon Cascades

Mostly sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds and small hail in the afternoon. Snow level above 8000 feet. Pass Winds northwest 5 to 10 Mph. Chance of rain 50 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 28 May North Oregon Cascades

Rain Showers likely with a slight chance of Thunderstorms in the Evening, then rain Showers likely after midnight. Some Thunderstorms may produce gusty Winds and small hail in the evening. Snow level above 8000 feet. Pass Winds west 10 to 15 Mph with Gusts up to 45 Mph. Chance of rain 70 percent. Rainfall Amounts a quarter to a half of an Inch, except higher Amounts possible in Thunderstorms.

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Wahtum Lake Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (29.8 miles)

  • Lowest 15 May, 2026

    44.7 °F

  • Average May

    61.3 °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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