Wikimedia
Wikipedia: Weather Front
This Wikipedia site tells all about weather fronts, or boundaries between two air masses with differing characteristics. Includes many hyperlinked terms to additional information on related subjects.
Science Struck
Science Struck: A List of All Weather Symbols and Their Meanings
Provides a comprehensive list of weather symbols used on weather maps.
University of Illinois
University of Illinois Urbana Champaign: Effects of Cloud Cover on Forecasting
This site explores the "factors to consider when forecasting day and nightime temperatures," and how cloud cover will effect these predictions.
University of Illinois
University of Illinois Urbana Champaign: Severe Storms
This site talks about severe storms. Topics include the dangers of thunderstorms, types of thunderstorms, components of thunderstorms, tornadoes, and modeling.