This book traces the major exchanges that have occurred since colonial times in the role of weather in life and livelihood in the US. The intent is to relate how shifts in ordinary human activities have been influenced and altered the significance of climate patterns -- patterns that have been far more stable than the society experiencing them -- development of weather science where appropriate. At times, persistent features of climate and recurrent weather have acted as help or hindrance, hazard or resource. And as ways of life in the country have changed, these features have become hazard of resources in new ways.