Dorchester Rainfall Forecast

  • 15%
  • 5%
  • 5%
  • No Rain
  • 5%
  • 30%
  • 25%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Dorchester Rainfall Statistics

September Rainfall

Summerville Airport (8.1 miles)

  • Total Rainfall September

    0.6in

  • Daily Average September

    0.1in

  • Wettest Day 6 September, 2026

    0.4in

  • Wet Days September

    2/13 (15%)

Climate (2021–2025)

Summerville Airport (8.1 miles)

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  • Annual Average 2021–2025

    37.7in

  • Monthly Average 2021–2026

    3.2in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 30 September, 2022

    4.6in
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