Arrowhead Lake Weather Forecast

    • 49
    • 56

    Chance Rain Showers

    • 49
    • 62

    Mostly Sunny

    • 48
    • 60

    Mostly Sunny

    • 44
    • 56

    Partly Sunny

    • 45
    • 56

    Partly Sunny

    • 45
    • 58

    Mostly Sunny

Today 22 Jul Cascades of Whatcom and Skagit Counties

Mostly sunny. A slight chance of Showers in the morning. A slight chance of snow Showers until late afternoon. A slight chance of Thunderstorms in the afternoon. Areas of smoke early in the afternoon. Snow level near 10000 feet.

Tonight 22 Jul Cascades of Whatcom and Skagit Counties

Mostly clear. Freezing level near 12500 feet.

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Arrowhead Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (44.1 miles)

  • Lowest 4 July, 2025

    46 °F
  • Average July

    64.9 °F
  • Highest 16 July, 2025

    91 °F

Climate (2020–Present)

Arlington Municipal Airport (44.1 miles)

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  • Average Low 2020–2025

    42.3 °F
  • Average 2020–2025

    50.5 °F
  • Average High 2020–2025

    59.7 °F
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