Head of the Harbor Rainfall Forecast

  • 10%
  • 30%
  • No Rain
  • 15%
  • 10%
  • 30%
  • 50%
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  • Rainfall Probability Forecast NOAA

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Head of the Harbor Rainfall Statistics

December Rainfall

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Total Rainfall December

    1.3in

  • Daily Average December

    0.4in

  • Wettest Day 2 December, 2025

    1.3in

  • Wet Days December

    1/5 (20%)

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Annual Average 2020–2024

    45.6in

  • Monthly Average 2020–2025

    3.7in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 16 July, 2023

    4.6in
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