I have a WH-1080 weather station that I'm running successfully with some python scripts called pywws
It doesn't provide the same features as the weather software you mentioned
but it does provide all the data as a series of text files.
[It just occurred to me that you could run the Windows weather software under a virtual machine as long as USB can be accessed from it. Must give this a try with VMware
: I just tried out the Cumulus
software and it works in a VMware session. Guest is running Windows XP