I have lived in many places in the country and "wind" is definitely defined differently everywhere. I am familiar with Wyoming -- I would suggest riding in sub 30, try to ride into the wind to start and then use the tailwind to ride home, if you can control your route in that manner.

On the high plains, spring is generally the windiest time of year. Also, if you can, early morning or evening rides tend to have less wind.

I share your pain. The wind out on the plains is an entirely different animal than many places around the country. I use the <35 guideline, if you go much lower, there just won't be many ridable days.