Isle Au Haut - Old Cove Weather Forecast

    • 47
    • 60

    Decreasing Clouds

    • 47
    • 61

    Mostly Sunny

    • 46
    • 60

    Mostly Cloudy

    • 47
    • 56

    Rain Showers Likely

    • 48
    • 58

    Rain Showers Likely

    • 50
    • 63

    Slight Chance Rain Showers

Today 21 May Knox

Partly sunny. Cooler with Highs in the mid 60s. Light and variable Winds.

Tonight 21 May Knox

Mostly clear. Lows around 40. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Au Haut - Old Cove Temperature Statistics

May Temperature

Rockland, Knox County Regional Airport (24.2 miles)

  • Lowest 4 May, 2026

    32 °F

  • Average May

    51.8 °F

  • Highest 17 May, 2026

    82 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (24.2 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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