Isle Au Haut - Old Cove Weather Forecast

    • 60
    • 62

    Rain Showers

    • 60
    • 71

    Slight Chance Rain Showers

    • 61
    • 71

    Mostly Cloudy

    • 60
    • 67

    Partly Sunny

    • 60
    • 73

    Partly Sunny

    • 59
    • 71

    Slight Chance Rain Showers

Today 17 Aug Knox

Mostly cloudy. Highs in the upper 60s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 17 Aug Knox

Cloudy. Isolated Showers after midnight. Patchy fog after midnight. Lows in the lower 60s. Light and variable Winds. Chance of rain 20 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 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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