Extract text from Daily data files (DLY)
To convert DLY Data files to another format, you need NOAA Tools or other Data software.
To convert other file formats to the "Climatology Data File" file type, you need software like NOAA Tools or a similar tool.
.DLY files serve two very different functions: they are predominantly used as fixed-width text files to store Global Historical Climatology Network-Daily (GHCN-D) weather observations from NOAA, or they act as proprietary digital magazines for the Cafeyn (formerly LeKiosk) reading application.
The NOAA data files contain highly structured meteorological records (such as temperature and precipitation). The major disadvantage of this format is its rigid, fixed-width text structure. It is cumbersome to read natively in modern spreadsheet software like Microsoft Excel without tedious manual column parsing. Researchers and data scientists typically need to convert these files to CSV or TXT to analyze the data properly.
The digital magazine variant of .DLY is heavily DRM-protected and proprietary. You cannot open it outside the official Cafeyn app, and standard online converters fail to process it because the format is intentionally closed to prevent piracy. It requires an active subscription and locks you into their ecosystem.
Because these files are either complex fixed-width text structures or closed binaries, standard conversion tools often fail.
Convert.Guru analyzes your DLY file, detects the exact format, and lets you read the text inside.
Users also converted VERSION, RML and ANON files.
If you want to convert DLY file to , you can use NOAA Tools or similar software from the "Daily Climate Data Storage" category. In the File menu, look for Save As… or Export….
To convert files to DLY, try NOAA Tools or another comparable tool in the "Daily Climate Data Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DLY converter.