Wisconsin Annual Rainfall and Climate Data, see below for individual cities 

 

Wisconsin city precipitation totals

City

Avg Annual Precip

Avg Snow Annual

Avg # days of Precip

Avg # thunderstorm days

Avg # hail days Avg # severe thunderstorm watches per year Avg # tornado watches per year # of tornadoes reported in county, 1960-2010
Green Bay 29.19 47.6 121 33 1 2 9 16
La Crosse 32.36 42.8 112 39 2 5 12 12
Madison 32.95 43.9 120 40 2 4 12 53
Milwaukee 34.81 47.0 125 35 2 2 10 15
  • Wisconsin Annual Precipitation Average - 32.64", 33rd wettest in the U.S.
  • Wisconsin Tornado Average - 19.1 per year - 17th most in the U.S.
  • Largest reported Tornado in Wisconsin from 1950-2011, 6/7/2008 - 3,520 yards / 2.0 miles wide
  • Date with highest number of reported Tornadoes in Wisconsin from 1950-2011, June 8th - 35 tornadoes
  • Average time of occurrence of reported Tornadoes in Wisconsin from 1950-2011 - 4:15 pm
  • Wisconsin Annual Lightning Density - 5.4 flashes per square mile - 28th highest in U.S.
  • Record Driest year in Wisconsin from 1895-2012 - 1976, avg precipitation 20.93 inches 
  • Record Wettest year in Wisconsin from 1895-2012 - 1938, avg precipitation 41.86 inches

Wisconsin Precipitation Records

  • Driest location ranked by lowest annual precipitation: Washington Island, eastern Wisconsin, 28.54"
  • Wettest location ranked by highest annual precipitation: Lake Geneva, southeastern Wisconsin, 37.05"
  • Snowiest location ranked by highest annual snowfall: Gurney, northern Wisconsin, 138.7"
  • State precipitation record for 24 hours - Stoddard, southwestern Wisconsin, 8/18-19/2007, 11.75" 
  • State precipitation record for 1 year - Embarrass, central Wisconsin, 1884, 62.07"
  • State snowfall record for 24 hours - Neillsville, central Wisconsin, 12/27/1904, 26.0"
  • State snow record for 1 season - Hurley, northern Wisconsin, 1996-1997, 277.0"
  • Average annual duration of snow cover ranges from 85 days in southernmost Wisconsin to more than 140
    days along Lake Superior
  • On January 30, 1996 Hurley, Wisconsin broke the state record with a measured snow depth of 60 inches (5 feet)
    on the ground
  • On January 4, 1982 Milwaukee, Wisconsin was shut down completely as a major storm buried the city under
    16 inches of snow in 24 hours. It was the worst storm for the city in thirty-five years
  • On January 3, 1921, the first radio broadcasts of weather forecasts began on this date as the University of Wisconsin
    began using the new medium.
  • Wisconsin temperature averages and extremes, Milwaukee climate extremes/averages, precipitation and temperature
    data for all U.S. states and interesting Top 10 U.S. climate extremes

Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data - NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala