Isle Au Haut - Old Cove Weather Forecast

    • 63
    • 80

    Becoming Sunny

    • 61
    • 77

    Mostly Sunny

    • 60
    • 73

    Chance Rain Showers

    • 59
    • 73

    Mostly Sunny

    • 59
    • 74

    Mostly Sunny

    • 59
    • 70

    Chance Rain Showers

Today 11 Aug Knox

Mostly sunny. Humid with Highs in the mid 80s. West Winds around 10 Mph.

Tonight 11 Aug Knox

Mostly clear. Lows in the lower 60s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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Isle Au Haut - Old Cove Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (24.2 miles)

  • Lowest 1 August, 2026

    55.9 °F

  • Average August

    70.2 °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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