Isle Au Haut - Old Cove Weather Forecast

    • 59
    • 66

    Rain Showers Likely

    • 60
    • 72

    Rain Showers

    • 61
    • 66

    Mostly Cloudy

    • 60
    • 67

    Slight Chance Rain Showers

    • 60
    • 73

    Partly Sunny

    • 59
    • 71

    Partly Sunny

Today 17 Aug Knox

Cloudy. Showers with a slight chance of Thunderstorms this Morning, then a chance of Showers this afternoon. Highs in the upper 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.

Tonight 17 Aug Knox

Cloudy. A chance of Showers with a slight chance of Thunderstorms in the Evening, then Showers likely after midnight. Patchy fog. Lows around 60. Light and variable Winds. Chance of rain 60 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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