Weather predictions specifically for astronomers for hundreds of observatories, observing sites and clubs in the USA and Canada.

The mission of CDC is to identify the nature and causes of climate variations on time scales ranging from a month to centuries.

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.

The National Weather Service agency that maintains a continuous watch on short term climate fluctuations and diagnoses and predicts them.

6 to10 day, monthly, seasonal and multi-seasonal outlooks from the Climate Prediction Center.

free long range weataher forecasts to help you plan your weather sensitive activities and events.

Information and long term predictions from the climate division of the Scripps Institution of Oceanography at the University of California, San Diego.

Forecasts of anomalous 250 and 750 mb streamfunction out as far as six weeks ahead, using the statistical technique linear inverse modeling.

Desert climate research at the US Geological Survey Flagstaff Field Center, Arizona.

University of Nebraska offering reports and data on regional climate research.

Providing outlooks for heavy rain and snow, as well as guidance weather forecasts through five days.

Assessing and developing seasonal-to-interannual climate forecasts, while fostering the application of such forecasts to the explicit benefit of society.

Long-range weather forecasts from Harris-Mann Climatology, including a U.S. Climate Timeline.

The U.S. National Weather Service office that provides worldwide forecast guidance products.

The world's largest active archive of weather data. NCDC produces numerous climate publications and responds to data requests from all over the world.

North Atlantic Oscillation and its relevance to climate variability and predictability. Includes information on air-sea and air-land interactions, model results, and satellite data.

The section of NCEP responsible for issuing marine warnings, forecasts and guidance for maritime users.

Atlantic-European Climate Group, Department of Meteorology, University of Reading. Mechanisms and predictability of decadal climate fluctuations.

RHEA provide consulting services and skills in urban hydrology, water pollution control, automatic controls and atmospheric physics.

Seasonal forecasts of European Windstorms, US Hurricanes, Far East Typhoons and Australian Cyclone. Statistical forecast techniques are employed.

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.

Official government site for the prediction of thunderstorms and severe weather in the U.S.

National Hurricane Center site providing detailed location and forecasting of tropical storms and hurricanes

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 complete for at least 80 years.