Other
American Meteorological Society: Data Streme Atmosphere
This site provides an extensive amount of weather information. Includes current information, forecasting, and historic weather related events. Weather map symbols and terminology explained.
NOAA
Noaa: Earth System Research Laboratory: Psd: Interactive Climate Map of u.s.
Investigate climate trends across the United States by clicking on individual states and then specific cities. Data is presented from 1961-1990.