Tomyhoi Lake Weather Forecast

    • 44
    • 62

    Mostly Sunny

    • 43
    • 65

    Mostly Sunny

    • 43
    • 61

    Mostly Sunny

    • 42
    • 60

    Partly Sunny

    • 43
    • 62

    Partly Sunny

    • 41
    • 58

    Slight Chance Rain

    • 41
    • 54

    Partly Sunny

Today 16 Sep Cascades of Whatcom and Skagit Counties

Sunny. Freezing level near 11500 feet.

Tonight 16 Sep Cascades of Whatcom and Skagit Counties

Clear. Freezing level near 13500 feet.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tomyhoi Lake Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (40.4 miles)

  • Lowest 6 September, 2026

    44.7 °F

  • Average September

    60.4 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (40.4 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.1 °F
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