Frontenac is located in Saint Louis County, Missouri. There are roughly 3,818 residents, living in 1,457 households. The average temperature for Frontenac this time of the year is low of 67F and high of 89F. On average, Frontenac gets about 3.84 inches of precipitation in July. Most residents are home owners (93%), have a post secondary degree (70%) and are married, no kids (40%).
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