The average annual precipitation in the United States, based on data from the National Climate Report in 2020, measures 30.28 inches–an average that has increased from past years.

Philadelphia had its last measurable rainfall back on Sept. 29 of 0.11 inches. Philadelphia receives average annual rainfall of 37.89 inches and has gotten 33.43 inches so far this year.

The United States has been ... And it may take flooding rainfall to reverse the long-standing dryness. During October, about 72 percent of the planet experienced above average amounts of ...