If you want to make your own weather station (Do it yourself (DIY) weather instruments)
DIY Weather Instruments (plans for all the weather instruments)
DIY weathervane
How to make a weather vane.
DIY Anenometer
DIY barometer
DIY Thermometer
DIY Rain Gauge
Buy your weather station equipment
Cole Palmer Weather Supplies
Weatherinstruments.com
Ambientweather.com
More sites about weather and weather instruments
Weather Instruments
Weather Wiz Kids
Google Search for Weather Instruments
Nationals Geographic Forces of Nature
National Geographic: Floods