Fallen Leaf Lake Weather Forecast

    • 44
    • 66

    Decreasing Clouds

    • 46
    • 71

    Mostly Sunny

    • 57
    • 83

    Mostly Sunny

    • 58
    • 88

    Partly Sunny

    • 52
    • 74

    Mostly Cloudy

    • 50
    • 72

    Partly Sunny

Today 30 May East Clark County Lowlands

Mostly cloudy in the Morning, then clearing. Highs in the upper 60s. West wind 5 to 10 Mph.

Tonight 30 May East Clark County Lowlands

Mostly clear. Lows in the lower 40s. Northwest wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fallen Leaf Lake Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (3.1 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 (3.1 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.4 °F
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