Mount Formidable Weather Forecast

    • 43
    • 52

    Slight Chance Rain Showers

    • 43
    • 46

    Rain Likely

    • 44
    • 47

    Rain

    • 42
    • 45

    Rain Showers Likely

    • 41
    • 48

    Slight Chance Rain Showers

    • 42
    • 51

    Partly Sunny

Today 13 Aug Cascades of Whatcom and Skagit Counties

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

Tonight 13 Aug Cascades of Whatcom and Skagit Counties

Partly cloudy with a slight chance of Showers in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Snow level near 9500 feet.

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  • Temperature Forecast NOAA

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Mount Formidable Temperature Statistics

August Temperature

Arlington Municipal Airport (52.8 miles)

  • Lowest 8 August, 2025

    46.9 °F

  • Average August

    65.2 °F

  • Highest 10 August, 2025

    87.1 °F

Climate (2020–Present)

Arlington Municipal Airport (52.8 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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