Great Lakes Communities and Ecosystems
Migrating Climates
Illinois
Indiana
Michigan
Minnesota
New York
Ohio
Ontario
Pennsylvania
Wisconsin

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Over the 21st century, the climate of the Great Lakes region will change significantly.
map of Great Lakes
Temperature Change - Precipitation Change - Extreme Events
Analysis is limited to temperature and precipitation seasonal averages. It does not account for changes in variability and extremes nor the specific effects of regional topography such as the Appalachians, Ozarks or Great Lakes on climate.
© 2003 Union of Concerned Scientists