Weathering and the Atmosphere
USAToday.com - This web site contains all the information you could possible want to learn about weathering and atmosphere.
NCDC.gov - Perform a search on the National Climatic Data Center web site.  The site is self-proclaimed as the "worlds largest archive of weather data."
AccuWeather.com - View current weather conditions around the world.  Search for the 15 day forcast in your area.
Weather.com - Another site for viewing current weather conditions.  User can also obtain information on their local forcast.
Learner.org - Brief information on the green house effect and the structure of the atmosphere.
Spacelink.NASA - A very educational web site on atmosphere and weather.  There are many links for different aspects of atmosphere and weather.
StormGuy.com - Excellent Pictures and video on lightning, clouds, tornados