Isle Au Haut - Old Cove Weather Forecast

    • 59
    • 70

    Dense Fog

    • 60
    • 69

    Dense Fog

    • 60
    • 68

    Mostly Sunny

    • 62
    • 68

    Chance Rain Showers

    • 60
    • 71

    Chance Rain Showers

    • 59
    • 73

    Partly Sunny

    • 60
    • 70

    Partly Sunny

Today 24 Aug Knox

Mostly sunny. Highs in the upper 70s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 24 Aug Knox

Partly cloudy. Patchy fog. Lows in the upper 50s. Light and variable Winds.

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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

    54.9 °F
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