Newhalem Weather Forecast

    • 64
    • 88

    Partly Sunny

    • 64
    • 89

    Mostly Sunny

    • 62
    • 88

    Mostly Sunny

    • 62
    • 87

    Partly Sunny

    • 59
    • 84

    Partly Sunny

    • 56
    • 79

    Partly Sunny

Today 23 Aug Foothills and Valleys of the North Cascades

Sunny. Highs in the 90s. Northeast wind to 10 Mph in the morning becoming light.

Tonight 23 Aug Foothills and Valleys of the North Cascades

Partly cloudy. Lows in the 60s. Light wind.

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Newhalem Temperature Statistics

August Temperature

Arlington Municipal Airport (54.7 miles)

  • Lowest 21 August, 2025

    46 °F

  • Average August

    65.4 °F

  • Highest 12 August, 2025

    93 °F

Climate (2020–Present)

Arlington Municipal Airport (54.7 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.7 °F
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