Isle Au Haut - Old Cove Weather Forecast

    • 61
    • 75

    Increasing Clouds

    • 63
    • 76

    Mostly Cloudy

    • 63
    • 68

    Chance Rain Showers

    • 63
    • 75

    Partly Sunny

    • 63
    • 77

    Partly Sunny

    • 61
    • 75

    Slight Chance Rain Showers

Today 6 Aug Knox

Patchy fog in the morning. Mostly sunny. Warm with Highs in the upper 80s. Light and variable Winds, becoming south around 10 Mph in the afternoon. Heat index Values in the mid 90s in the afternoon.

Tonight 6 Aug Knox

Partly cloudy. Patchy fog. 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

    66.8 °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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