Isle Au Haut - Old Cove Weather Forecast

    • 53
    • 66

    Sunny

    • 57
    • 62

    Partly Sunny

    • 58
    • 62

    Rain Showers Likely

    • 51
    • 67

    Mostly Sunny

    • 54
    • 62

    Partly Sunny

    • 56
    • 63

    Partly Sunny

    • 55
    • 64

    Chance Rain Showers

Today 11 Sep Knox

Sunny. Near steady temperature in the upper 60s. Northwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 11 Sep Knox

Clear. Lows in the mid 40s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Isle Au Haut - Old Cove Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (24.2 miles)

  • Lowest 1 September, 2026

    48.9 °F

  • Average September

    61.5 °F

  • Highest 7 September, 2026

    78.1 °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

    54.8 °F
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