Stimson Hill Weather Forecast

    • 48
    • 65

    Mostly Sunny

    • 48
    • 63

    Mostly Cloudy

    • 47
    • 59

    Mostly Cloudy

    • 44
    • 56

    Slight Chance Rain

    • 46
    • 57

    Rain Likely

    • 43
    • 53

    Rain Likely

Today 20 Sep Foothills and Valleys of the North Cascades

Sunny. Highs in the mid 60s to lower 70s. Light wind.

Tonight 20 Sep Foothills and Valleys of the North Cascades

Mostly clear. Lows near 50. Light wind.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Stimson Hill Temperature Statistics

September Temperature

Arlington Municipal Airport (9.9 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.7 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
Get WillyWeather+ to remove ads