Isle Au Haut - Old Cove Weather Forecast

    • 59
    • 71

    Partly Sunny

    • 59
    • 68

    Rain Showers

    • 62
    • 67

    Rain Showers Likely

    • 60
    • 66

    Partly Sunny

    • 60
    • 70

    Mostly Sunny

    • 60
    • 70

    Partly Sunny

    • 61
    • 71

    Partly Sunny

Today 21 Aug Knox

Mostly sunny. Highs around 80. Light and variable Winds.

Tonight 21 Aug Knox

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Au Haut - Old Cove Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (24.2 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    68.8 °F

  • Highest 6 August, 2026

    86 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (24.2 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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