Weather files generated from ASHRAE IWEC 1.1 Weather Files

(c) 2001 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA, USA. All rights reserved as noted in the License Agreement and Additional Conditions.

1. Download, unzip and copy the required weather files (with extension .prn) to the subdirectory Climate of the IDA installation
   (often C:\Program files\IDA\Climate\).
   
   
2. Download and open the file country.idm with IDA Modeller. This file contains descriptions of the weather files, such as information about latitude and longitude of the weather stations. Click with the right mouse button in IDA on the station you want and select Write to database. This will save the reference to the weather file in your database.
   
   Here are the available weather files (compressed with Winzip):

The C source code of the weather file utility