Isle Au Haut - Old Cove Weather Forecast

    • 62
    • 73

    Rain Showers

    • 62
    • 75

    Sunny

    • 61
    • 66

    Partly Sunny

    • 62
    • 68

    Partly Sunny

    • 63
    • 75

    Partly Sunny

    • 63
    • 76

    Partly Sunny

    • 62
    • 75

    Partly Sunny

Today 3 Aug Knox

Showers with a slight chance of Thunderstorms. Areas of fog. Visibility one quarter mile or less at Times. Highs in the mid 70s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 80 percent.

Tonight 3 Aug Knox

Mostly cloudy with Showers likely with a slight chance of Thunderstorms in the Evening, then mostly clear after midnight. Patchy fog. Visibility one quarter mile or less at Times in the evening. Humid with Lows in the lower 60s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 60 percent.

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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

    65.9 °F

  • Highest 1 August, 2026

    75 °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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