A full report of the hottest temperatures and heat indices recorded in the state of Wisconsin since the late 1800s.
Blogs
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.
Highlighting Wisconsin’s Hail History
Severe thunderstorms traveled across Wisconsin on May 15, 2025, accompanied by tornadoes, strong straight-line thunderstorm winds, and large and potentially damaging hail. Several reports of softball-sized hail with diameters approaching four inches fell near Altoona …
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!