http://www.weatherwizkids.com/weather-instruments.htm
http://www.weatherwizkids.com/?page_id=82
http://easyscienceforkids.com/weather-forecasting-instruments/
https://climate.ncsu.edu/edu/k12/.instruments
http://weather.about.com/od/weatherinstruments/a/barometers.htm
http://weather.about.com/od/weatherinstruments/a/hygrometers.htm
www.weather.com
http://www.wunderground.com/
http://www.wundergro_und.com/wundermap/