Bismarck has received 17.61 inches of precipitaion from January 1, 2009 to July 14, 2009. The average annual precipitation for Bismarck based on data from 1971 to 2000 is 16.84 inches. Bismarck is already 0.77 inches above its yearly average, and it is only mid July! Below is a graph of temperatures and precipitation for Bismarck for 2009. The light green line for precipitation in the middle of the graph represents a normal precipitation curve for Bismarck. The dark green shading indicates above average precipitation relative to the normal precipitation curve. The precipitation for the graph below is based on data ending a day before the current date.