International Research Institute for Climate Prediction  
   Assessing and developing seasonal-to-interannual climate forecasts, while fostering the application of such forecasts to the explicit benefit of society.
   http://iri.ldeo.columbia.edu/

Climate Prediction Center  
   The National Weather Service agency that maintains a continuous watch on short term climate fluctuations and diagnoses and predicts them.
   http://www.cpc.ncep.noaa.gov/

Hydrometeorological Prediction Center  
   Providing outlooks for heavy rain and snow, as well as guidance weather forecasts through five days.
   http://www.hpc.ncep.noaa.gov/

U.S. Historical Climatology Network (U.S. HCN)  
   Best available historical (monthly) temperature and precipitation data from the United States for analyzing long-term climate trends on a regional scale. Data for most stations extend through December, 1994, and a majority of the station records are comp
   http://cdiac.esd.ornl.gov/epubs/ndp019/ndp019.html

Daily 30-day Long Range Weather Forecasts  
   free long range weataher forecasts to help you plan your weather sensitive activities and events.
   http://www.dryday.com/

Experimental Climate Prediction Center  
   Information and long term predictions from the climate division of the Scripps Institution of Oceanography at the University of California, San Diego.
   http://ecpc.ucsd.edu/

Storm Prediction Center  
   Official government site for the prediction of thunderstorms and severe weather in the U.S.
   http://www.spc.noaa.gov/

Tropical Prediction Center  
   National Hurricane Center site providing detailed location and forecasting of tropical storms and hurricanes
   http://www.nhc.noaa.gov/

Space Environment Center  
   Providing space weather alerts and warnings to the nation and the world for disturbances that can affect people and equipment working in space and on Earth.
   http://www.sec.noaa.gov/

Climate Diagnostics Center  
   The mission of CDC is to identify the nature and causes of climate variations on time scales ranging from a month to centuries.
   http://www.cdc.noaa.gov/

Climate Prediction Products  
   6 to10 day, monthly, seasonal and multi-seasonal outlooks from the Climate Prediction Center.
   http://www.cpc.ncep.noaa.gov/products/predictions/

Flagstaff USGS -- Deserts  
   Desert climate research at the US Geological Survey Flagstaff Field Center, Arizona.
   http://wwwflag.wr.usgs.gov/USGSFlag/Land/desert/desert.html

Seasonal Forecasts of Extreme Weather Events  
   Seasonal forecasts of European Windstorms, US Hurricanes, Far East Typhoons and Australian Cyclone. Statistical forecast techniques are employed.
   http://forecast.mssl.ucl.ac.uk/

National Centers for Environmental Prediction  
   The U.S. National Weather Service office that provides worldwide forecast guidance products.
   http://wwwt.ncep.noaa.gov/

Clear Sky Clock homepage  
   Weather predictions specifically for astronomers for hundreds of observatories, observing sites and clubs in the USA and Canada.
   http://www.cleardarksky.com/csk/

PreDiCate  
   Atlantic-European Climate Group, Department of Meteorology, University of Reading. Mechanisms and predictability of decadal climate fluctuations.
   http://ugamp.nerc.ac.uk/predicate/

RHEA forecasts the wet-weather risks  
   RHEA provide consulting services and skills in urban hydrology, water pollution control, automatic controls and atmospheric physics.
   http://www.rhea.tm.fr/

Climate Graphs  
   Provides city climate statistics on average temperatures, rainfall, relative humidity, windspeeds, number of clear days and the percentage of days with sunshine for each month. Includes cities around the world.
   http://www.free-weather.com

Long-Range Weather Forecasts  
   Long-range weather forecasts from Harris-Mann Climatology, including a U.S. Climate Timeline.
   http://www.longrangeweather.com

High Plains Climate Center  
   University of Nebraska offering reports and data on regional climate research.
   http://www.hprcc.unl.edu/

Experimental Medium-Range Weather Forecasts  
   Forecasts of anomalous 250 and 750 mb streamfunction out as far as six weeks ahead, using the statistical technique linear inverse modeling.
   http://www.cdc.noaa.gov/map/lim/

Ocean Prediction Center  
   The section of NCEP responsible for issuing marine warnings, forecasts and guidance for maritime users.
   http://www.opc.ncep.noaa.gov/