Isle Au Haut - Old Cove Weather Forecast

    • 61
    • 73

    Increasing Clouds

    • 63
    • 69

    Partly Sunny

    • 63
    • 69

    Mostly Cloudy

    • 63
    • 73

    Slight Chance Thunderstorms

    • 64
    • 74

    Partly Sunny

    • 63
    • 74

    Partly Sunny

Today 5 Aug Knox

Mostly sunny. Warm with Highs in the mid 80s. Light and variable Winds, becoming south around 10 Mph in the afternoon.

Tonight 5 Aug Knox

Partly cloudy. Lows in the lower 60s. 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 1 August, 2026

    55.9 °F

  • Average August

    66.7 °F

  • Highest 2 August, 2026

    75.9 °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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