Lost Lake Weather Forecast

    • 51
    • 65

    Mostly Cloudy

    • 51
    • 67

    Mostly Cloudy

    • 50
    • 66

    Mostly Sunny

    • 52
    • 70

    Mostly Sunny

    • 52
    • 69

    Sunny

    • 58
    • 76

    Sunny

    • 58
    • 81

    Sunny

Today 16 Aug North Oregon Cascades

Mostly cloudy with rain likely this Morning, then partly sunny this afternoon. Snow level above 8000 feet this morning. Pass Winds west 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an inch.

Tonight 16 Aug North Oregon Cascades

Partly cloudy this Evening, then becoming mostly cloudy. Free air freezing level 14000 Feet, decreasing to free air freezing level 13000 feet after midnight. Winds light.

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Lost Lake Temperature Statistics

August Temperature

Portland, Portland-Troutdale Airport (28.6 miles)

  • Lowest 8 August, 2025

    50.6 °F

  • Average August

    70.3 °F

  • Highest 10 August, 2025

    100.7 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (28.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.1 °F
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