National Weather Service Homepage
Excellent resource for travelers or anyone who needs latest weather alerts. Hardcore "weather buffs" will love this site! The Regional Forecast Offices are prominently linked, each uniquely and professional designed, offering users a comprehensive choice of links on every weather topic from Satellite Imagery to Fire Weather Forecasts.
Brought to us by the folks at the Weather Channel, the site is easy to use and offers quick access to local, national and Latin American conditions and forecasts as well as temperature and precipitation averages for the entire calendar year.
Weather Undeground delivers weather conditions in the States and all around the world and is brought to us by the National Weather Service (NWS). Additionally, it offers historical conditions going back 10 years and the site is easy to navigate and use.