Hart Island Weather Forecast

    • 42
    • 51

    Mostly Sunny

    • 42
    • 49

    Mostly Sunny

    • 43
    • 48

    Rain Showers Likely

    • 44
    • 50

    Rain Showers Likely

    • 42
    • 50

    Rain Showers

    • 42
    • 51

    Partly Sunny

Today 7 May Knox

Partly sunny with a 20 percent chance of Showers. Highs in the lower 60s. Light and variable Winds, becoming west around 10 Mph this afternoon.

Tonight 7 May Knox

Mostly clear. Lows in the upper 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hart Island Temperature Statistics

May Temperature

Rockland, Knox County Regional Airport (13.7 miles)

  • Lowest 4 May, 2026

    32 °F

  • Average May

    48.1 °F

  • Highest 4 May, 2026

    63 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (13.7 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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