It’s the height of the flu season in the United States. This season isn’t as strictly defined as the Atlantic Basin hurricane season, which officially runs from June 1 to Nov. 30 each year. According to the Centers for Disease Control and Prevention, the northern hemisphere’s flu season “can begin as early as October and can last as late as April or May.”

However, all months aren’t created equal in either season. Just as peak hurricane activity in the northern hemisphere typically takes place…