Wisconsin Faces Increasing Weather Extremes Due to Climate Change

In-Depth Analysis

The Wisconsin Initiative on Climate Change Impacts (WICCI) has released its 2026 report, highlighting the growing impact of climate change on the state. The report indicates a shift towards warmer and wetter conditions, with more frequent and intense storms. State Climatologist Steve Vavrus noted that the average temperatures have risen about 3 degrees Fahrenheit since the 1950s, and the last two decades were the warmest on record. The state has also seen a 17 percent increase in annual precipitation. The report emphasizes that the 2010s were the wettest decade on record with the most extreme weather in the state’s history.

Last year, Milwaukee set a new 24-hour record for rainfall, causing widespread flooding and prompting nearly $207 million in federal aid. The extreme rains served as a stark reminder of the need to build climate and flood resilience now. As the state sees more extremes, potential approaches that communities may adopt to strengthen resilience to climate impacts are being developed. These range from helping landowners prepare for climate stress on forests to coastal flooding from fluctuating water levels. Diversifying crops and other water management strategies could help the agriculture industry adapt. The initiative also recommends communities reduce their greenhouse gas emissions by adopting renewable energy and using low-carbon concrete or other construction materials.

Furthermore, tornadoes are beginning earlier in the year and touching down more often. There were 45 tornadoes in 2024 and 39 tornadoes in 2025, well above the annual average of 23. This increase in tornado activity, combined with the rising frequency of extreme weather events, underscores the urgent need for proactive climate action and resilience-building measures across Wisconsin.

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FAQ

How much have temperatures increased in Wisconsin?

Average temperatures in Wisconsin have risen about 3 degrees Fahrenheit since the 1950s.

What was significant about the 2010s in Wisconsin?

The 2010s were the wettest decade on record with the most extreme weather in the state’s history.

What contributed to the severe thunderstorms?

Warm, humid air and weather fronts have fueled the severe thunderstorms.

Takeaways

Climate change is significantly impacting Wisconsin, leading to warmer, wetter conditions and more extreme weather events.
It is essential to build climate and flood resilience to mitigate the risks associated with these changes.
Communities should adopt strategies to strengthen resilience, such as nature-based solutions and reducing greenhouse gas emissions.

Discussion

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Sources

Wisconsin will see warmer, wetter weather — and more extremes, report finds Will climate change put Wisconsin in tornado alley? Wisconsin climatologist says extreme weather is becoming more common in April

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