Hart Island Weather Forecast

    • 54
    • 60

    Mostly Sunny

    • 56
    • 62

    Partly Sunny

    • 57
    • 63

    Chance Rain Showers

    • 53
    • 66

    Partly Sunny

    • 53
    • 60

    Chance Rain Showers

    • 52
    • 60

    Chance Rain Showers

Today 15 Sep Knox

Sunny. Highs in the upper 60s. Light and variable Winds.

Tonight 15 Sep Knox

Clear. Lows in the mid 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hart Island Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (13.7 miles)

  • Lowest 12 September, 2026

    44.1 °F

  • Average September

    62.1 °F

  • Highest 10 September, 2026

    84 °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

    54.8 °F
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