Duncannon is located in Perry County, Pennsylvania. There are roughly 1,381 residents, living in 598 households. The average temperature for Duncannon this time of the year is low of 58F and high of 81F. On average, Duncannon gets about 4.03 inches of precipitation in June. Most residents are home owners (51%), have a high school diploma (62%) and are single, no kids (49%).
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