Williams Island Weather Forecast

    • 55
    • 72

    Decreasing Clouds

    • 52
    • 73

    Mostly Sunny

    • 54
    • 69

    Rain Showers

    • 56
    • 67

    Rain Showers Likely

    • 53
    • 70

    Slight Chance Rain Showers

    • 53
    • 71

    Mostly Sunny

Today 20 Aug Coastal Washington

Mostly cloudy in the Morning, then becoming partly sunny. Areas of fog in the morning. Highs in the upper 70s. Southwest Winds around 5 Mph.

Tonight 20 Aug Coastal Washington

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 50s. Southwest Winds around 5 Mph, becoming northwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williams Island Temperature Statistics

August Temperature

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

  • Lowest 16 August, 2026

    51.1 °F

  • Average August

    69.1 °F

  • Highest 6 August, 2026

    90 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    54.6 °F
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