You could do this with BIT's add-on system. You could create a batch file(s) to pull the data from Clientraw.txt and save it into other text files which BI uses for Macros. Use the weather_get handler in BIT and just put "none" for the weather station in BIT.
I too use WD and am interested in this. I use a .txt file created by WD for use in IPTimelapse - of course someone else developed it and helped me get it running.Has anyone done something to use the clientraw.txt as I'm also another user of Weather Display, and would far sooner utilize my own station data directly, than taking the 'long cut' of going via WU.