New to the forum, Cumulus, etc, so pardon for dredging up this old post, but wanted to show what I've done...
I purchased a LaCrosse WS-2813U from Costco and set it up last week. Have now been wanting to create a web page so started looking into options and kept coming across beautiful pages running Cumulus. With the price being right (ie: Free

) I started looking into it, but quickly saw my unit was not on the supported list. Decided to search the forums, and found this thread. Well, with Steve's last post, that set me on another search to find out how to create a usable file out of WUHU. That led me to DigbyDave's post
https://cumulus.hosiene.co.uk/viewtopic.p ... 432#p37432 and his WUHU_Cumulus Action Template files that will create an easyweather.dat file. As a complete n00b to all of this, it took me awhile (and more googling) to find how to get this working properly (put the Actions.txt file in the WUHU directory, and create a templates directory for the template. Then create an action in WUHU's interface that points to the the actions.txt file. And the big "a-ha" for me was going into WUHU's setup -> General Settings, and checking write currdat.lst and checking Write Extended Data, and pointing this to a new directory under WUHU that I call data).
So now I had a working easyweather.dat file. Now I configured Cumulus. For Station Type, EasyWeather (using .dat file), I set the EasyWeather interval to 1 min, pointed the Easyweather.dat box to the location that WUHU is writing the file to. I played around with some of the checkboxes and filled in items that seemed to apply to me.
Next I set up the Internet settings, and was able to publish the basic web page, and IT WORKED! So yes, I have to have HeavyWeather running, which updates the currdat.lst file. WUHU then reads that file, creates its extended version of currdat.lst and then creates the Easyweather.dat file for Cumulus. Cumulus then reads Easyweather.dat, processes the data and uploads to the internet for my website!

(Hmmm... so how many points of failure do I have there?

)
Ok, not wanting to stop there, I then took the plunge to use a custom template. For now I chose Sunny Weather by JacquesD (
https://cumulus.hosiene.co.uk/viewtopic.php?f=14&t=6255). I saw that n9mfk had created a PHP version (found here:
https://cumulus.hosiene.co.uk/viewtopic.p ... 5&start=52) and used that. Did some minor changes, and wow! I'm a very happy camper right now
You can check out my new site here:
http://www.frazierhome.net/wx
I'm still tweaking and playing, but overall I'm very happy to have this working.
So in short, it takes some work, but yes, LaCrosse WS-2810, 2812, 2813, C86234 can work with Cumulus.
NOTE: For those attempting this configuration, since WUHU is the primary feed off the actual currdat.lst file, I recommend using WUHU to do your data uploads to PWS, WUnderground, WeatherBug, etc...