Hart Island Weather Forecast

    • 60
    • 68

    Increasing Clouds

    • 61
    • 73

    Partly Sunny

    • 63
    • 72

    Chance Rain Showers

    • 61
    • 69

    Chance Rain Showers

    • 58
    • 70

    Partly Sunny

    • 60
    • 67

    Mostly Cloudy

Today 25 Aug Knox

Partly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Highs around 80. Light and variable Winds, becoming southwest around 10 Mph in the afternoon. Chance of rain 20 percent.

Tonight 25 Aug Knox

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hart Island Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (13.7 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    68.8 °F

  • Highest 6 August, 2026

    86 °F

Climate (2021–2026)

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

    54.9 °F
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