Here are seven occasions when weather may have changed the course of American history.
Weather Cams
Almanac weather cams in Dublin, NH:
See full-size images, hourly updates, and history.
Featured Weather Cam: Old Faithful, Yellowstone National Park, Wyoming
 For easy reference, here is a chart showing the frost dates in the spring and fall for various U.S. cities. (Also, see our frost dates for Canada.) |
 Think blizzard and heavy snowfall comes to mind. Officially, however, the deadly winter storm is defined by these factors: |
