Alpine climate

average weather (climate) for the regions above the tree line

Alpine climate is the average weather (climate) for the regions above the tree line but below the place where the snow never melts.[1][2][3]This is a mountain or highland climate.

White Mountain, an alpine environment at 4,300 metres (14,000 ft) in California

No month has a mean temperature higher than 10 °C (50 °F).[4]

References