Newhalem Weather Forecast

    • 42
    • 60

    Increasing Clouds

    • 41
    • 59

    Partly Sunny

    • 45
    • 62

    Rain

    • 39
    • 50

    Rain Showers

    • 38
    • 53

    Slight Chance Rain

    • 39
    • 56

    Chance Rain

    • 41
    • 55

    Chance Rain

Today 22 Sep Foothills and Valleys of the North Cascades

Mostly cloudy with a chance of rain. Highs in the mid 60s.

Tonight 22 Sep Foothills and Valleys of the North Cascades

Mostly cloudy. Lows in the mid 40s to lower 50s. Light wind.

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Newhalem Temperature Statistics

September Temperature

Arlington Municipal Airport (54.7 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.3 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (54.7 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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