Potomac Rainfall Forecast

  • 80%
  • 100%
  • 10%
  • 45%
  • No Rain
  • 5%
  • 45%
Graph Plots Open in Graphs
  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Potomac Rainfall Statistics

January Rainfall

Gaithersburg - Montgomery County Airport (10.6 miles)

  • Total Rainfall January

    2.4in
  • Daily Average January

    0.1in
  • Wettest Day 1 January, 2021

    1.9in
  • Wet Days January

    4/25 (16%)

Climate (2010–Present)

Gaithersburg - Montgomery County Airport (10.6 miles)

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  • Annual Average 2010–Present

    60in
  • Monthly Average 2010–Present

    6.5in
  • Daily Average 2010–Present

    0.2in
  • Wettest Day 21 July, 2018

    9.7in
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