Weather data is required to produce an accurate simulation.  The weather data for a location consists of hourly values of outside dry-bulb temperature, wet-bulb temperature, atmospheric pressure, wind speed and direction, cloud cover, and (in some cases) solar radiation. Weather data suitable for use in DOE-2 is produced by running the DOE-2 weather processor on raw weather files provided by the U.S. National Weather Service and other organizations.

Weather data can be found in a number of places on the Internet as follows:

• FTI's Weather File Library - This library is provided free of charge to any FTIDOE or DOE-2 user.  We post all files that are donated to us in this library so we always appreciate you sending us any weather data files that you have. 
  
• National Climatic Data Center - You can purchase data files here.
• Australian Weather Data
  
• Lawrence Berkeley Weather Data information page