Williams Island Weather Forecast

    • 55
    • 64

    Mostly Cloudy

    • 46
    • 68

    Chance Rain Showers

    • 44
    • 58

    Mostly Sunny

    • 44
    • 57

    Chance Rain Showers

    • 44
    • 59

    Partly Sunny

    • 44
    • 57

    Partly Sunny

Today 17 Sep Coastal Washington

Partly sunny in the Morning, then becoming mostly cloudy. Patchy fog in the morning. Highs in the upper 60s. Northeast Winds around 5 Mph, becoming southeast around 5 Mph in the afternoon.

Tonight 17 Sep Coastal Washington

Showers. Patchy fog. Lows in the mid 50s. South Winds around 5 Mph. Chance of rain 90 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Williams Island Temperature Statistics

September Temperature

Bar Harbor, Hancock County-Bar Harbor Airport (65.9 miles)

  • Lowest 9 September, 2026

    44.1 °F

  • Average September

    61 °F

  • Highest 10 September, 2026

    80.1 °F

Climate (2021–2026)

Bar Harbor, Hancock County-Bar Harbor Airport (65.9 miles)

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

  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    54.6 °F
Get WillyWeather+ to remove ads