St James Rainfall Forecast

  • 5%
  • No Rain
  • 20%
  • No Rain
  • 60%
  • 50%
  • 40%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

St James Rainfall Statistics

September Rainfall

Islip, Long Island Mac Arthur Airport (6.2 miles)

  • Total Rainfall September

    4.2in

  • Daily Average September

    0.3in

  • Wettest Day 13 September, 2026

    3.1in

  • Wet Days September

    6/16 (38%)

Climate (2021–2025)

Islip, Long Island Mac Arthur Airport (6.2 miles)

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  • Annual Average 2021–2025

    44.1in

  • Monthly Average 2021–2026

    3.7in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 16 July, 2023

    4.6in
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