Iowa Annual Rainfall see below for individual cities 


 

Iowa city precipitation totals

City

Avg Annual Precip

Avg Snow Annual

 Avg. days of Precip
Des Moines .34.72 31.8 108
Dubuque 35.52 42.1 117
Sioux City 25.99 32.0 99
Waterloo 33.15 31.8 103
State Average - 34.05 inches, 31st wettest in U.S. 

Iowa Precipitation Records 

  • Driest location ranked by least Annual Precipitation: Akron, northwest Iowa,, 25.81"
  • Wettest location ranked by most Annual Precipitation: Lamoni, southern Iowa, 39.37"
  • Snowiest location ranked by highest annual snowfall: Dubuque, eastern Iowa, 43.8"
  • State precipitation maximum for 24 hours - Decatur county, southern Iowa, 8/5-6/1959, 16.70" 
  • State precipitation maximum for 1 year - Muskatine, southeast Iowa, 1851, 74.50"
  • State snow maximum for 24 hours - Sibley, northwest Iowa, 2/18/1962, 21.0"
  • State snow maximum for 1 season - Northwood, northern Iowa, 1908-1909, 90.4"

Precipitation data for other U.S. states
Data source: National Data Climatic Center