Dan's Wild Wild Weather Page - site covers topics such as Clouds (my favorites are big, puffy cumulus), Wind, Radar, Satellites, Forecasting and Hurricanes. His illustrated explanations are concise, and he has a variety of good science links for teachers
Earthquakes For Kids - every thing you need to know about earthquakes. Includes games, science fair projects and so much more
FEMA For Kids - all too many disasters are weather related. FEMA has pulled together a site suitable for kids with all kinds of handy hints about what to do in bad weather
Franklin's Forecast - with "Franklin's Forecast," you can build your own weather station, learn about today's sophisticated weather technologies, and check the weather right now
How Tornadoes Work - great explanation from the folks at "How Stuff Works"
Hurricane Hunters - the 53rd Weather Reconnaissance Squadron, known as the Hurricane Hunters of the Air Force Reserve, is one-of-a-kind: the only Department of Defense organization still flying into tropical storms and hurricanes--since 1944. Great illustrations!
Snow Crystals - this site is all about snow crystals and snowflakes -- what they are, where they come from, and just how these remarkably complex and beautiful structures are created, quite literally, out of thin air
Space Weather Centre - designed for educators and students to learn more about our dynamic Sun, space weather, the solar system and more
The Weather Dude - a weather page especially for kids, parents, and teachers, includes musical meteorology
Windows to the Universe - events and happenings in the world of earth and space science
Thunder & Lightning - great info from Kidipede
Tsunami - everything you want to know about tsunamis (tidal waves)
Weather Wiz Kids - learn more about the fascinating world of weather