AccuWeather - U.S. and world forecasts and weather maps. Local 5-day forecasts by U.S. zipcode.
CNN Weather - Weather-related news and four-day forecasts for more than 6,000 cities.
EarthWatch Communications - Weather headlines and on-demand 3-D weather visualization.
Intellicast - Offers worldwide city forecasts, detailed radar, NEXRAD and satellite images. Also, ski area reports and forecasts, regional forecasts arranged by month and Dr. Dewpoint's weather articles
Lycos Global Weather Service - Global weather and forecasts. Search by city or view US nationwide maps. Also contains precipitation, drought index, jet stream and 90 day forecasts.
NASA Space Weather Bureau - Daily monitoring of solar flares, geomagnetic storms, Earth's aurora, and all forms of space weather.
National Weather Service - Interactive Weather Information Network (IWIN) - A user friendly interface to the weather, with raw data from a telecommunications gateway, satellites, and other multilayered links.
New Jersey Online Weather - Search 800 cities for local, national, or international weather. Flight delays and the Farmer's Almanac.
Personal AccuWeather(tm) - Unique, personalized and complete weather information at any time of day, up-to-the-minute for your local area. Free and premium services.
VAS-DAS - Emergency Management Systems for Severe Weather Prediction.
The Weather Channel - Breaking weather news, forecasts, current conditions and travel advice.
Weather Online - State and local short and long term forecasts for the US and Canada.
Weather Site dot Com - Maps, radar, forecasts, and special pages for marine, aviation, agricultural, hurricane and travelers' weather.
WeatherLabs - Easy to use.
Wunderground - Forecasts, maps, city pages, radar and much more. Customizable as well.