Learn about historic Wisconsin weather, seasonal statistics, weather myths, and climate news you can use from the State Climatology Office.
Early October’s Summer Heat
Wisconsinites haven’t been able to escape summer’s clutches, as July-like heat dragged through much of September and now into early October.
Overheating October: Wisconsin Weather Outlook
October is a month of cooling temperatures and drying weather patterns. Some can even see their first flakes by the end of the month!
Sliding into September: Wisconsin Weather Outlook
Temperatures change significantly throughout the month: the beginning of September often feels more summer-like, while the end of the month can take on a brisk, autumn feel.
Looking Back: 20 Years Since Wisconsin’s Largest Tornado Outbreak
Hundreds of homes were destroyed and thousands of lives impacted in a storm that many Wisconsin residents will never forget.
Historic Flooding in Southeast Wisconsin: August 9 to 10, 2025
On August 9, 2025, torrential downpours caused the worst flash flooding event in southeast Wisconsin since 2008.
Winding Down Summer: Wisconsin August Weather Outlook
August is when Wisconsin usually begins its descent into fall: temperatures dip slightly and thunderstorms become less frequent.
What Changes in Canada’s Wildfire Season Mean for Wisconsin
Wildfire season in Canada has worsened over recent years, due to shorter and drier winter seasons creating elevated drought conditions.
Hot Dog, Hot July: Wisconsin Weather Outlook
July is typically Wisconsin's hottest month of the year, so don't get your hopes too high for any “refreshing” temperatures.
Crop Response to the Heat, Humidity, and Heavy Rainfall
Higher temperatures and the crops being in their vegetative phase mean increased water demand by the crops and the atmosphere.
The First Heat Wave of Summer 2025
The first major heat wave of the summer is finally fading from Wisconsin, after 80- and 90-degree temperatures and tropical-feeling humidity.
Sneaky Trend in Wisconsin’s Summer Heat
These steamy temperatures fit into a longer pattern of hot Junes and a rising trend towards warmer nights.
Jumping into June: Wisconsin Weather Outlook
Many locations typically experience their first 90° days of the season in June, and some can even reach the triple digits!