Isle Au Haut - Old Cove Weather Forecast

    • 60
    • 69

    Slight Chance Rain Showers

    • 61
    • 71

    Mostly Cloudy

    • 60
    • 72

    Partly Sunny

    • 60
    • 72

    Partly Sunny

    • 59
    • 70

    Chance Rain Showers

    • 60
    • 70

    Chance Rain Showers

Today 18 Aug Knox

Mostly cloudy this Morning, then becoming partly sunny. Patchy fog this morning. Highs in the upper 70s. Light and variable Winds.

Tonight 18 Aug Knox

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog. Lows around 60. Light and variable Winds.

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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 15 August, 2026

    55 °F

  • Average August

    69.7 °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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