Thanks for the response, I read what you suggested and I'm going to modify the domain to see what happens.
Another thing I realized is that my forecast does not generate the Humidity variable.
dict_keys(['Times', 'XLAT', 'XLONG', 'LU_INDEX', 'ZNU', 'ZNW', 'ZS', 'DZS', 'VAR_SSO', 'BATHYMETRY_FLAG', 'U', 'V', 'W', 'PH', 'PHB', 'T', 'THM', 'HFX_FORCE', 'LH_FORCE', 'TSK_FORCE', 'HFX_FORCE_TEND', 'LH_FORCE_TEND', 'TSK_FORCE_TEND', 'MU', 'MUB', 'NEST_POS', 'P', 'PB', 'FNM', 'FNP', 'RDNW', 'RDN', 'DNW', 'DN', 'CFN', 'CFN1', 'THIS_IS_AN_IDEAL_RUN', 'P_HYD', 'Q2', 'T2', 'TH2', 'PSFC', 'U10', 'V10', 'RDX', 'RDY', 'AREA2D', 'DX2D', 'RESM', 'ZETATOP', 'CF1', 'CF2', 'CF3', 'ITIMESTEP', 'XTIME', 'QVAPOR', 'QCLOUD', 'QRAIN', 'QICE', 'QSNOW', 'QGRAUP', 'QHAIL', 'QNCLOUD', 'QNRAIN', 'QNICE', 'QNSNOW', 'QNGRAUPEL', 'QNHAIL', 'SHDMAX', 'SHDMIN', 'SHDAVG', 'SNOALB', 'TSLB', 'SMOIS', 'SH2O', 'SMCREL', 'SEAICE', 'XICEM', 'SFROFF', 'UDROFF', 'IVGTYP', 'ISLTYP', 'VEGFRA', 'GRDFLX', 'ACGRDFLX', 'ACSNOM', 'SNOW', 'SNOWH', 'CANWAT', 'SSTSK', 'WATER_DEPTH', 'COSZEN', 'LAI', 'VAR', 'O3_GFS_DU', 'MAPFAC_M', 'MAPFAC_U', 'MAPFAC_V', 'MAPFAC_MX', 'MAPFAC_MY', 'MAPFAC_UX', 'MAPFAC_UY', 'MAPFAC_VX', 'MF_VX_INV', 'MAPFAC_VY', 'F', 'E', 'SINALPHA', 'COSALPHA', 'HGT', 'TSK', 'P_TOP', 'GOT_VAR_SSO', 'T00', 'P00', 'TLP', 'TISO', 'TLP_STRAT', 'P_STRAT', 'MAX_MSFTX', 'MAX_MSFTY', 'RAINC', 'RAINSH', 'RAINNC', 'SNOWNC', 'GRAUPELNC', 'HAILNC', 'REFL_10CM', 'CLDFRA', 'SWDOWN', 'GLW', 'SWNORM', 'ACSWUPT', 'ACSWUPTC', 'ACSWDNT', 'ACSWDNTC', 'ACSWUPB', 'ACSWUPBC', 'ACSWDNB', 'ACSWDNBC', 'ACLWUPT', 'ACLWUPTC', 'ACLWDNT', 'ACLWDNTC', 'ACLWUPB', 'ACLWUPBC', 'ACLWDNB', 'ACLWDNBC', 'SWUPT', 'SWUPTC', 'SWDNT', 'SWDNTC', 'SWUPB', 'SWUPBC', 'SWDNB', 'SWDNBC', 'LWUPT', 'LWUPTC', 'LWDNT', 'LWDNTC', 'LWUPB', 'LWUPBC', 'LWDNB', 'LWDNBC', 'OLR', 'XLAT_U', 'XLONG_U', 'XLAT_V', 'XLONG_V', 'ALBEDO', 'CLAT', 'ALBBCK', 'EMISS', 'NOAHRES', 'TMN', 'XLAND', 'UST', 'PBLH', 'HFX', 'QFX', 'LH', 'ACHFX', 'ACLHF', 'SNOWC', 'SR', 'SAVE_TOPO_FROM_REAL', 'WSPD10MAX', 'W_UP_MAX', 'W_DN_MAX', 'REFD_MAX', 'UP_HELI_MAX', 'W_MEAN', 'HAILCAST_DIAM_MAX', 'ISEEDARR_SPPT', 'ISEEDARR_SKEBS', 'ISEEDARR_RAND_PERTURB', 'ISEEDARRAY_SPP_CONV', 'ISEEDARRAY_SPP_PBL', 'ISEEDARRAY_SPP_LSM', 'TCOLI_MAX', 'GRPL_FLX_MAX', 'REFD_COM', 'REFD', 'VIL', 'RADARVIL', 'ECHOTOP', 'FZLEV', 'ICINGTOP', 'ICINGBOT', 'QICING_LG_MAX', 'QICING_SM_MAX', 'ICING_LG', 'ICING_SM', 'AFWA_MSLP', 'AFWA_HEATIDX', 'AFWA_WCHILL', 'AFWA_FITS', 'AFWA_TLYRBOT', 'AFWA_TLYRTOP', 'AFWA_TURB', 'AFWA_LLTURB', 'AFWA_LLTURBLGT', 'AFWA_LLTURBMDT', 'AFWA_LLTURBSVR', 'AFWA_TOTPRECIP', 'AFWA_RAIN', 'AFWA_SNOW', 'AFWA_ICE', 'AFWA_FZRA', 'AFWA_SNOWFALL', 'AFWA_CLOUD', 'AFWA_CLOUD_CEIL', 'AFWA_CAPE', 'AFWA_CIN', 'AFWA_CAPE_MU', 'AFWA_CIN_MU', 'AFWA_ZLFC', 'AFWA_PLFC', 'AFWA_LIDX', 'AFWA_PWAT', 'AFWA_HAIL', 'AFWA_LLWS', 'AFWA_TORNADO', 'C1H', 'C2H', 'C1F', 'C2F', 'C3H', 'C4H', 'C3F', 'C4F', 'PCB', 'PC', 'LANDMASK', 'LAKEMASK', 'SST', 'SST_INPUT'])
Saludos!