The coldest average temperature in Scottsdale is December at 54.2 degrees. The most monthly precipitation in Scottsdale occurs in August with 1.5 inches. The Scottsdale weather information is based on the average of the previous 3-7 years of data.
Divergent boundaries within continents initially produce rifts which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.
Most boundaries are either convergent or divergent, but transform boundaries occur in a few places to accommodate lateral motion, where plates move horizontally past one another. This type of boundary is very rare on continents, but they are dramatic where they do occur.