QuickStats: Average Infant Mortality Rate by Month — National Vital Statistics System, United States, 2010–2014

During 2010–2014, the infant mortality rate averaged approximately 6.00 infant deaths per 1,000 live births each month.

The infant mortality rate peaked in February and April at approximately 6.30 and was lowest from July to September with approximately 5.71 infant deaths per 1,000 live births.

Source: https://www.cdc.gov/mmwr/volumes/65/wr/mm6545a11.htm