An interesting example of a temperature inversion while skiing at Shawnee Peak in Bridgton, Maine.

While at Shawnee Peak for night skiing there was a very noticeable change in temperature and winds with height. We were travelling up the triple chair to the top, along side the Main trail. While ascending the mountain there was a transition to very warm air- this occurred at about mid-way up the Main trail where the woods end. While no instrumentation was available, I estimate the temperature to be 55 degrees. This is in comparison to the cool air at the surface/base of the lift of around 29 or 30 degrees. The trees were literally dropping from condensation in the warm air as they remained cool antecedently. The winds at the surface were calm, but picked up substantially at around mid-station of the triple chair- to an estimated 30 mph at the top of the mountain. There was another temperature transition at mid-station, but this time it was downward- it was close to 20 at the top and when combined with the wind made it feel very cold. So at the onset of this, it was cool and calm at the surface, warm and moist mid-way then cold and windy at the top of the mountain.

After the night's skiing, the temperatures at the parking lot were still cool, but interestingly there were periodic bursts of very warm air. I surmise this was the winds from aloft mixing the warm layer with the cool layer at the ground. This created a visible scintillation of light sources due to the temperature (and thus diffractive index) differences in the air.
This event preceded two days of record warmth in Portland on the 8th and 9th of January, 2008. January 8th brought 61° and the 9th brought 54°.