WapReview

Forecasts by zip code or city/state. Has an extended forecast covering the next 10 days. You can save a list of your favorite locations.
Dead 3/20/05 - Main page comes up but the forecast links return "not found."
Update 10/23/05: Found a working wml version at a different url. It's intended for Cingular customers but works for anyone but only Cingular customers who register with their personal information and Cingular phone number can save favorite locations.
Update 12/31/06: Discovered a working xhtml version that is not branded with any specific carrier. Still can't save favorites, however. Update 3/31/2006. Yet another Weather Channel xhtml url. Finally one remembers your location plus this one has maps, radar, pollen counts, surf forecast, tides, airport delays, sun and moon rise and set - pretty much the ultimate mobile weather site.

Includes satellite and radar images as well as current and 15 day forecast for locations worldwide. Users can save their favorite locations. Animated radar maps are centered on the user's location with the ability to pan and zoom

Accuweather also has weather news, weather blogs, weather records, a hurricane center and severe weather warnings.

Weather from the National Weather Service for any US zipcode. Very comprehensive weather site. Includes detailed 36 hour forecast, 7 day forecast, radar and satellite images, marine forecasts, tides and severe weather and tsunami warnings.

Complete weather forecasts, weather data from 700 neighborhood weather stations, radar, and live weather cams.

The Weather Underground's new "iPhone" site offers a streamlined touch friendly interface that also works well with the Android, WebOS, Symbian 3rd and 5th edition and Opera Mini and Mobile browsers on devices with screens at least 320px wide..  It's location aware on Android and the iPhone. Source: Taptu Blog

Site is optimized for advanced mobile browsers that make it easy to scroll through long pages like the iPhone, Palm Blazer, Pocket IE, Opera (including Mini). This site gives you a great deal of information beyond a simple forecast including dew point, barometer, visibility, marine forecast and sun and moon rise and set.

Page size is under 15KB so most mainstream phones will be able to load the page. The low usability rating reflects the excessive scrolling required to reach the most important information - the weather forecast.

Basic Weather Forecast for the next 5 days. Data from The Weather Channel.

Very full featured and well designed weather site. Local weather forecasts for anywhere in the world. Radar Maps, 7 day forecast, marine forecast, fire danger, air quality and almanac information (sunrise, etc.). Supports 12 languages. But doesn't persist your location or language choice.

Australian and international weather information site with satellite images, weather radar, forecast charts and a full range of Australian forecasts and current observations.It's a  "Middle-web" site optimized for the iPhone, Pre and Android but it doesn't require JavaScript and is usable on most devices.

A very well done mobile weather site. It's truly international, claiming to cover 80,000 locations. I was able to bring up detailed forecasts for every city I tried including Havana, Nairobi, Oslo, Chengdu and San Francisco. For each location Forca provides daily and 7 day forecasts and animated GIF maps showing radar and satellite views as well as temperature, precipitation, clouds and wind.

Eurometeo (mobile.eurometeo.com/en/home- is an Italian based weather site with weather forecasts and satellite images for all of Europe as well as Mediterranean tide tables and marine forecasts for Italian waters.

Hourly wind speed and direction report, three day forecast and tide tables for UK windsurfers and beachgoers in an compact, attractive and easy to use format that should work on all phones. Source: Taptu Touch Web Report (PDF)

PAW = PDA Animated Weather. An amazing site from the University of Wisconsin. Over 100 different animated satellite and radar weather maps. The maps are 300 px wide animated gifs and are zoomable and scrollable on devices that support html image maps. Not the most mobile friendly site - you select a map from a huge scrolling list but the maps are gorgeous. How well this site works, if it works at all is highly dependent on your browser. Opera Mini makes a complete mess of this site but my phones built-in Openwave V7 browser does a pretty good job with working animation and scrolling, etc. via a set of links below the maps.

Live or travel in hurricane country? This site will keep you updated on tropical storms along both US coasts.

Good weather site, especally for International forecasts

Aimed at surfers, sailors and windsurfers, Windfinder delivers instant wind, wave and weather forecasts for anywhere in the world

Current and five day weather forecasts for most U.S. and major world cities.  There are supposed to be weather radar maps too but the Rockford, IL radar image is shown for all cities. Source: Mobility.mobi