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Many reports have indicated a correlation between climate and crime. Here, we examine the correlation between climatic factors and forensic autopsies, and show that higher rates of murder, manslaughter, and bodily injury resulting in death occur on sunny days than on non-sunny days. The largest number of autopsies was associated with days on which the weather was unstable. In addition to increased activity of people on sunny days, unstable and uncomfortable weather may result in crime through induction of psychiatric stress. More hit-and-run cases occurred on rainy days than on non-rainy days, and unstable weather may also be associated with traffic crimes. We conclude that weather factors, in addition to social factors, are important in murder and in fatalities due to hit-and-run traffic crimes. [ABSTRACT FROM AUTHOR]