Trillium Lake Weather Forecast

    • 55
    • 76

    Becoming Sunny

    • 62
    • 85

    Partly Sunny

    • 58
    • 84

    Partly Sunny

    • 58
    • 80

    Partly Sunny

    • 55
    • 78

    Mostly Cloudy

    • 52
    • 70

    Slight Chance Rain Showers

Today 1 Sep North Oregon Cascades

Mostly sunny. Hazy this afternoon. Free air freezing level 14000 feet. Winds light.

Tonight 1 Sep North Oregon Cascades

Partly cloudy in the Evening, then clearing. Hazy after midnight. Free air freezing level 14000 Feet, increasing to free air freezing level 15000 feet after midnight. Winds light.

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Trillium Lake Temperature Statistics

September Temperature

The Dalles Municipal Airport (36.7 miles)

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  • Average September

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Climate (2020–Present)

The Dalles Municipal Airport (36.7 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    66.8 °F
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