Weather

AccuWeather
Offers current local conditions, 5-day, 10-day, 15-day and extended weather forecasts plus weather maps, Doppler radar, and historical weather information.
http://www.accuweather.com/

America's Weather
Where to go for weather radar, satellite, difax, forecasts, snow maps, lightning, surface maps, warnings, upper air maps, news, tropical weather. Get your states weather information local forecasts, state warnings and watches zone forecasts, summaries.
http://www.americasweather.com

Find Local Weather
Look up weekly forecasts by city or zip code.
http://www.findlocalweather.com/

Integrated Surface Irradiance Study
Offers updated Sun radiation data from U.S. network of stations.
http://www.srrb.noaa.gov/isis/index.html

Lightning Explorer - Vaisala Inc.
Map of the 48 contiguous states shows the locations of lightning strikes over the past two hours.
http://www.lightningstorm.com/ls2/gpg/lex1/mapdisplay_free.jsp?jrunsessionid=1016257034418145792

Live Weather Images
This site pulls together the best and most frequently accessed weather data on the Internet, and puts it all into one easy to use page.
http://www.weatherimages.org/

National Weather Service Internet Weather Source
Starting point for official government weather forecasts, warnings, and meteorological products for forecasting the weather.
http://weather.noaa.gov/

The Old Farmer's Almanac Long-range Weather Forecasts
A folksy approach to weather that has been around for over 100 years.
http://www.almanac.com/weather/index.php

Qwikcast.com
Interactive weather site providing worldwide weather information to help plan the day, week, month.
http://www.qwikcast.com/

Time and Weather
Weather for over 25,000 US locations by zip code or city name. Timezones, current weather conditions, international weather, UV forecasts, radar maps, watches and warnings.
http://www.timetemperature.com/

UM Weather
The University of Michigan at Ann Arbor's weather lab is among the pioneers of online weather products, including the excellent Weather Underground site.
http://cirrus.sprl.umich.edu/wxnet/

Umbrella Today?
Given a zip code, provides a simple Yes/No answer to the question "will I need an umbrella today?". Text message service available.
http://umbrellatoday.com/

911Weather
Provides notification via fax, e-mail or pager of real-time National Weather Service watches and warnings.
http://911weather.com/

The Weather Channel
Offers forecasts for cities worldwide as well as radar and satellite maps. Also includes news stories and allergy information.
http://www.weather.com/

Weather History - CityRating.com
Weather history data including temperature, relative humidity, precipitation, cloudiness and weather extremes in tabular and graphical formats.
http://www.cityrating.com/weatherhistory.asp

Weather Underground
Forecasts for cities, states and regions; U.S. weather maps, including radar maps, satellite imagery, fronts, and UV forecasts; and extensive related information.
http://www.wunderground.com/

Weather Watch, Warning and Advisory Display
National Weather Service Storm Prediction Center severe weather information.
http://www.spc.noaa.gov/products/wwa/index.shtml

WeatherBug
Free downloadable software provides your local weather forecast and weather report.
http://weather.weatherbug.com/

weatherOnline!
Weather forecasts reports and graphics for the US by entering city and state or zip code.
http://www.weatheronline.com/

WeatherPages.com
Weather forecasts and conditions by region, state and city.
http://www.weatherpages.com/

WeatherUSA.net
Weather information for the United States, including current conditions, lightning data, forecasts, SkyCams, weather warnings.
http://www.weatherusa.net/

WeatherVision
Streaming video forecasts for U.S. cities. TV weather forecasts on demand.
http://www.weathervision.com/

Wx.com
Weather experts providing 3-D weather radar and satellite images, national weather headlines and customized weather forecasts.
http://www.wx.com/

WXnation
A compilation of links to Doppler radars, traffic and live cams, as well as local weather forecasts and airport delays for the major US cities.
http://www.wxnation.com/

WxUSA
Weather links for 1500 US cities.
http://www.wxusa.com/