So I am planning a trip out west and will see some sights along the way and than I want to settle down somewhere in Colorado not to far from the Denver area
Can you clarify by "settle down somewhere", as being moving to Colorado to seek employment opportunities and long-term residency, or "settling down somewhere" as in wanting to spend a few weeks/months exploring what Colorado has to offer?
Others have addressed the weather issue as it relates to elevation here. General rule of thumb is that you will lose about 3.5 degrees for each 1000 feet in elevation gain. For the next few months (remainder of July/August/September) at lower elevations, the temps will frequently get into the 90s and pushing 100 in places, such as Pueblo. Head up to spots like Nederland or Estes Park or Conifer/Evergreen, and it will be in the 80s, sometimes getting into the upper 80s or low 90s.
If you are looking at long term, ie, 4-6 months or more, keep in mind that many (as in most) RV resorts/campgrounds at elevation close generally in September or early October and don't reopen until April or May. Even at lower elevations in the Wellington/Fort Collins to Colorado Spring/Pueblo Megalopolis (the Front Range Urban Corridor where 4.5 million of the 5.4 million people in Colorado live), many places have seasonal dates, with closures for a few months over the winter. Yes, there are places that are open all year, and have already been suggested. Just keep that in mind when looking for an area and research whether there are places to stay that are open year round.
