Hopefully we can figure a way to continue to use the smarthub as an antenna to pass on data, even though it will not be on Acurite's cloud. I think the smarthub is programmed in a way that requires talking to an acurite server. This has to be eliminated.
The Smarthub, like all (common today) network devices speaks/listens to data in IP/TCP format (on the "network" side, not the sensor/console side), using some type of (agreed upon) protocol.
All that is necessary to do is to have another device, or program, on the network that can utilize the specific Acurite protocol that Smarthub uses.
The actual data can flow between these devices/program using Ethernet, USB, serial port, or WiFi transmission interfaces.
The example of the widely available "WUHU" protocol handling program that I gave above is probably the best, simplest way to make a start at handling Smarthub's 'protocol/language' (which is probably, but not necessarily, unique to itself).
WUHU already is capable of handling inputs from many different PWS brands and models, and translating and communicating their (usually 'proprietary') protocols into a format used by many of the online websites presenting WX data online.
Those web PWS presenters each have their own set/protocol expectations of how the incoming WX data should be formatted. WUHU knows all this for many different PWS vendors (listed in WUHU's 'setup menu'), and many of the popular WX websites (each with it's own setup menu tab);. Then, once setup, it does all of the data conversions and manages the data streams (w/multiple website outputs), once set up.
I suspect that WUHU may actually be the most comprehensive WX data handler available. Most others all seem to be fairly restrictive in what they 'talk' to: some work with just one PWS brand, or a couple, some 'talk' only to the PWS vendor servers, or maybe WU. Some are more flexible, but a comparison would be a good project.
Which is why I think that WUHU would be a good program to expand, modify as necessary, in order to handle the various data protocol formats needed to 'salvage' those Smarthubs (which, BTW, I know almost nothing about; I have a new Acurite 5in1 + Access, that I haven't set up yet).
I think that a skilled programmer (there seem to be some around here) could work out a Smarthub 'hack' of WUHU rather easily. The same for other PWS systems, like some are doing with Linux and SDR's.