Isle Au Haut - Old Cove Weather Forecast

    • 60
    • 71

    Areas Fog

    • 60
    • 73

    Rain Showers

    • 58
    • 72

    Mostly Sunny

    • 59
    • 67

    Rain Showers Likely

    • 60
    • 70

    Chance Rain Showers

    • 59
    • 72

    Partly Sunny

Today 19 Aug Knox

Partly sunny. Patchy fog. Highs around 80. South Winds around 10 Mph.

Tonight 19 Aug Knox

Partly cloudy. Areas of fog. Visibility one quarter mile or less at Times after midnight. Humid with 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 16 August, 2026

    54 °F

  • Average August

    69.1 °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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