Hat Island Weather Forecast

    • 57
    • 66

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

    • 58
    • 66

    Chance Rain Showers

    • 57
    • 63

    Chance Rain Showers

    • 57
    • 63

    Rain Showers Likely

    • 55
    • 62

    Rain Showers Likely

Today 4 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly sunny in the morning then becoming sunny. Haze through the day. Highs in the 70s. Light wind.

Tonight 4 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly clear. Lows in the mid 50s to lower 60s. Light wind.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hat Island Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (6.8 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    60.5 °F

  • Highest 2 September, 2025

    73.4 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (6.8 miles)

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

  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    59.7 °F
Get WillyWeather+ to remove ads