Wisconsin has four distinctly different seasons. Meteorologists have defined the seasons as three month intervals as noted below. You may find seasonal graphs and data on each season page: Spring (March/April/May), Summer (June/July/August), Autumn (September/October/November), and Winter (December/January/February).

For additional information, check our Climatic Summaries by Divisions, Statewide Average Climatic Summary, Climate Watch, and Water Systems pages.