Isle Au Haut - Old Cove Weather Forecast

    • 61
    • 67

    Areas Fog

    • 60
    • 71

    Areas Fog

    • 62
    • 71

    Chance Rain Showers

    • 60
    • 70

    Chance Rain Showers

    • 59
    • 70

    Partly Sunny

    • 60
    • 69

    Partly Sunny

    • 60
    • 70

    Partly Sunny

Today 25 Aug Knox

Partly sunny with a 20 percent chance of Showers. Highs in the upper 70s. South Winds around 10 Mph.

Tonight 25 Aug Knox

Partly cloudy in the Evening, then clearing. Lows in the upper 50s. Light and variable Winds.

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  • 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

    68.6 °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

    54.9 °F
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