There are definitely four seasons. The summers can be hot but the humidity is low.
Winters are usually snowy and can be brutal but provide for excellent winter sporting activities.
Violent weather is the exception and not the rule. Although it is somewhat off the beaten path the activities in Cheyenne make for a wonderful place to live, work and raise a family. There are plenty of activities to do in your free time. To some degree that is true for men, however if you are a woman there are many opportunities to meet people in a social atmosphere.