Objective The aim of this study was to determine if there is an increase in the incidence of abusive head trauma during periods of weather extremes. Secondary outcomes included assessing a correlation between specific days of the week, months of the year, or seasons and the incidence of abusive head trauma. Methods This was a retrospective chart review of patients who were identified as having an ICD-9 diagnosis of certain types of trauma using charts obtained through the Trauma Registry and Coding Records from Saint Louis Children’s Hospital from January 2006 to December 2015. Inclusion criteria included age 0-2 years old with a diagnosis of abusive head trauma (AHT), which was defined by a confession by or witness of a perpetrator violently shaking the infant, an expired patient with an autopsy report declaring death by homicide, and/or a child with injuries suspicious for AHT with a confirmation of the diagnosis by a child abuse pediatrician. Date of incident of head trauma and zip code of location of incident were extracted from each patient’s chart. The daily mean, low, and high temperature of the specific location on the date of incident for each case was identified using the Midwestern Regional Climate Center (MRCC). Results From a total of 2427 trauma cases, 198 met inclusion criteria. There was a steady increase in cases as the temperature rose; there were 9 “cold” cases, 34 “cool” cases, 38 “mild”, 45 “moderate”, and 72 “hot.” However, cases that occurred during extreme temperatures were as likely to occur as cases in non-extreme temperatures, year over year. There were no statistically significant differences by season, as cases were as likely to occur in April-September (n=106) as they were in October-March (n=92), year over year. The month of August across all years saw the highest number of cases (n=23), whereas September and October across all years shared the lowest counts (n=11 each). Conclusion From this study, there appeared to be no correlation between extremes in temperature and the incidence of abusive head trauma. There was also no apparent association between incidence of abusive head trauma and days of the week or holidays.