10 year running snowfall averages for select sites in the Lakes/Midwest region. The snowfall numbers for 1881-82 to 1890-91 that are in italics means it was not a full 10 year average (data might have began in the middle of that period or there may be only 3 seasons in that average). Note GRR's average is not a full 10 years for the 1891-92 to 1900-01 period. Of course ORD and DTW were not the exact locations for the official totals throughout history, but I figured they're familiar so I used