The Grotto Rainfall Forecast

  • 10%
  • 35%
  • 5%
  • 25%
  • 35%
  • 35%
  • 5%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

The Grotto Rainfall Statistics

December Rainfall

Washington/Reagan National Airport, DC (3.1 miles)

  • Total Rainfall December

    0.9in

  • Daily Average December

    0.1in

  • Wettest Day 2 December, 2025

    0.9in

  • Wet Days December

    1/9 (11%)

Climate (2010–Present)

Washington/Reagan National Airport, DC (3.1 miles)

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  • Annual Average 2020–2024

    43.5in

  • Monthly Average 2020–2025

    3.3in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 9 July, 2022

    4.1in
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