sentences:  In recent years, average temperatures in the county seat of Lacon have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1999 and a record high of was recorded in July 2005.Average monthly precipitation ranged from in January to in May.As of the 2010 United States Census, there were 12,640 people, 5,161 households, and 3,549 families living in the county.