Isle Au Haut - Old Cove Weather Forecast

    • 61
    • 62

    Dense Fog

    • 60
    • 70

    Dense Fog

    • 60
    • 69

    Mostly Sunny

    • 60
    • 70

    Mostly Sunny

    • 62
    • 71

    Chance Rain Showers

    • 61
    • 71

    Chance Rain Showers

    • 59
    • 73

    Partly Sunny

Today 23 Aug Knox

Mostly cloudy with a 40 percent chance of Showers. Highs in the lower 70s. Light and variable Winds.

Tonight 23 Aug Knox

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Patchy dense fog. Lows in the lower 60s. Light and variable Winds. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    68.9 °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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