Oso Weather Forecast

    • 55
    • 87

    Mostly Sunny

    • 56
    • 89

    Partly Sunny

    • 54
    • 87

    Chance Rain

    • 52
    • 84

    Mostly Sunny

    • 52
    • 86

    Mostly Sunny

    • 55
    • 90

    Mostly Sunny

Today 14 Jul Foothills and Valleys of the North Cascades

Sunny. Highs in the upper 70s to mid 80s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 14 Jul Foothills and Valleys of the North Cascades

Mostly clear. Lows in the 50s. Northwest wind to 10 Mph in the evening becoming light.

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Oso Temperature Statistics

July Temperature

Arlington Municipal Airport (13 miles)

  • Lowest 5 July, 2026

    46.4 °F

  • Average July

    61.5 °F

  • Highest 6 July, 2026

    81 °F

Climate (2021–2026)

Arlington Municipal Airport (13 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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