Temperatures are projected to rise about 5☏ to 6☏ by mid-century 1, with significantly more warming by century’s end.

Key finding: Indiana has already warmed 1.2☏ since 1895.

This report from the Indiana Climate Change Impacts Assessment (IN CCIA) describes historical climate trends from more than a century of data and future projections that detail the ways in which our climate will continue to change. These changing climate patterns affect us individually and affect many aspects of our society, including human health, public infrastructure, water resources, agriculture, energy use, urban environments, and ecosystems. Indiana will continue to warm, more precipitation will fall, and extremely hot days will be common in many parts of the state. Projections show the pace picking up even more speed as heat-trapping gases, produced by humans burning fossil fuels, continue accumulating in the atmosphere. But the speed with which these changes occur has increased significantly in recent decades.

In some cases, these have been slow progressions. The data, going in some cases back to 1895, show clear trends, and there are no signs of them stopping or reversing.

Temperatures are rising, more precipitation is falling and the last spring frost of the year has been getting steadily earlier.

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