January
Logging has the highest death rate.
Death rates are apparently higher in the winter. See, for example, http://ph.state.al.us/chs/healthstatistics/Tables/2002/AVS02_34.htm.
august
k2
It hasn't.
I don't know what the highest overall death rate is, but the highest American death rate in a war was the Civil War, because we were fighting ourselves, so many Americans died.
september
Virginia source: http://www.chacha.com/question/which-colony-had-the-highest-death-rate-in-it's-early-years
monday
Liberia
golf
Infants