So there are now (FINALLY) Windows builds of PyGrib available from @condaforge. You can thank @wxchick10 for nerd-sniping me today.— Ryan May (@dopplershift) November 15, 2019
Actually, a lot of thanks should go to @ECMWF for getting eccodes to build on windows.
I love my job.
I gave it a try, and it seems to open HRRR grib2 files just fine. This means my HRRR_Pando scripts will work on a Windows machine now. Happy day!