Great Lakes Central weather data
Daily and Interactive Degree-Day Maps
Great Lakes Central base 41 degree-days to date
Online current and historical weather data/degree-days:
Great Lakes Central Current Data
data and calculator for: 209 Michigan, 223 Wisconsin, 107 Indiana, 194 Illinois, and 303 Ohio weather stations

Other regional data table links include: NW USA, SW USA, NE USA, SE USA, South Central USA, North Central USA, Great Lakes Central USA, Alaska USA, and Canada
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