I am going to go out to Colorado and Wyoming this spring and was aiming for mid May, but is that to early expect all the snow to be gone? I have a 2022 winnebago adventurer 29B. If it is too early then when would be the earliest. I have to be back in time for another trip in Ocean City Md on June 10th
I would say it totally depends on luck.
For an example, here in Reno, the same day in May or September one year will be 105°F and clear. The next year with snow on the that same day. 5k' elevation right here at my house (on top of a hill).
I have seen snow here in late June as well as in early September.
High elevations are often not predictable for more than a few days. Check before you go.
There are no guarantees on spring or fall weather in the higher elevations.
I have also seen (many times) inaccurate weather reports for just one day in advance, where snow was expected, but never came or vice versa.
Also, when I was in the army at Ft. Carson, Colorado in 1971 (after Vietnam) I can recall spring days where it was so windy, it was very difficult to walk outside, and cars were getting blown off highways. There are other weather conditions besides snow that can cause problems for RVers.
So good luck. You will have to count on it, unfortunately.
-Don- Reno, NV