That's what I did. I live in an ultra-humid coastal area, so the dehumidifier is likely to be running most of the time. I did want to be able to adjust the setting based on outside temps which are volatile --varying 30-40 degrees F all winter.
Using an old chart from Aprilaire, I set a global variable on a dashboard tile for the 'Forecast Outside Temp' then RM sets the humidity range on-off targets for the outlet.
The house is large and the dehumidifier struggles to keep up since most days are humid, even in winter, so I din't feel it necessary to add the complexity of pulling weather data and calculating indoor humidity settings on-the-fly. Though I do have @dylan.c 's post in my bookmarks and gave it serious consideration