Wisconsin Climate by Division
Climate Normals - What is a climate normal?
Long-term Variability of Annual Climate
Long-term Variability of Seasonal Climate
What is a climate division?
A climate division has been defined by the National Climatic Data Center to be an area of the state
that has relatively uniform climate characteristics. These regions, which were created in 1950,
correspond to the Crop Reporting Districts of the US Department of Agriculture and typically have
boundaries corresponding to county and state boundaries, except in mountainous states where topographic
features are used to determine the boundaries. Wisconsin has nine climate divisions as indicated by
the map at the top of the page.