Sumner is located in Jefferson County, Wisconsin. There are roughly 1,236 residents, living in 513 households. The average temperature for Sumner this time of the year is low of 56F and high of 80F. On average, Sumner gets about 4.02 inches of precipitation in June. Most residents are home owners (88%), have a high school diploma (51%) and are married, no kids (41%).
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