Peaceful Valley Weather Forecast

    • 50
    • 76

    Increasing Clouds

    • 51
    • 76

    Decreasing Clouds

    • 50
    • 78

    Mostly Sunny

    • 48
    • 74

    Partly Sunny

    • 47
    • 71

    Partly Sunny

    • 49
    • 70

    Mostly Cloudy

    • 50
    • 72

    Chance Rain

Today 18 Sep Foothills and Valleys of the North Cascades

Mostly cloudy with a chance of rain. Highs in the mid to upper 60s.

Tonight 18 Sep Foothills and Valleys of the North Cascades

Mostly clear. Lows near 50. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Peaceful Valley Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (19.9 miles)

  • Lowest 6 September, 2026

    44.7 °F

  • Average September

    60.2 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (19.9 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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