Lewis Lake Weather Forecast

    • 43
    • 59

    Rain Likely

    • 40
    • 47

    Rain

    • 38
    • 53

    Mostly Cloudy

    • 38
    • 57

    Partly Sunny

    • 42
    • 65

    Sunny

    • 44
    • 69

    Sunny

    • 45
    • 69

    Mostly Sunny

Today 12 Sep Cascades of Whatcom and Skagit Counties

Mostly cloudy in the morning then becoming mostly sunny. Freezing level near 9500 feet.

Tonight 12 Sep Cascades of Whatcom and Skagit Counties

Partly cloudy in the evening then becoming mostly cloudy. A chance of rain and snow after midnight. Snow level near 8500 feet.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis Lake Temperature Statistics

September Temperature

Omak Airport (57.8 miles)

  • Lowest 6 September, 2026

    46.7 °F

  • Average September

    64.7 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

Omak Airport (57.8 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.9 °F
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