Trillium Lake Weather Forecast

    • 55
    • 89

    Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 50
    • 77

    Mostly Sunny

    • 47
    • 66

    Mostly Sunny

    • 47
    • 68

    Mostly Sunny

    • 47
    • 68

    Mostly Sunny

Today 22 Jul North Oregon Cascades

Mostly sunny. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Patchy smoke. Free air freezing level 15000 feet. Winds light. Chance of precipitation 30 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 22 Jul North Oregon Cascades

Patchy smoke in the evening. Mostly cloudy with a chance of Thunderstorms in the Evening, then partly cloudy with a slight chance of Thunderstorms after midnight. Free air freezing level 15000 feet. Pass Winds west 5 to 10 Mph. Chance of precipitation 30 percent. Rainfall Amounts less than a tenth of an inch.

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Trillium Lake Temperature Statistics

July Temperature

The Dalles Municipal Airport (36.7 miles)

  • Lowest 1 July, 2026

    54.6 °F

  • Average July

    74.9 °F

  • Highest 15 July, 2026

    98.7 °F

Climate (2021–2026)

The Dalles Municipal Airport (36.7 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    56.4 °F

  • Average High 2021–2026

    66.9 °F
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