Actually, your weather is very much like ours. We get winter rains (about 16 inches) , none in the summer. Deeply rooted white sapotes require little water in the summer. Regularly we are 25-28 F in the winter, 75-80 F in the summer, fog in mornings and evenings. My oldest white sapote is 38 years old (Pike, Vernon) and has taken 19-20 F with very little damage. I am currently growing Pike, Vernon, Walton, Nies, McDill, Malibu #1, Malibu #3, Selck, Edgehill, ROA, Fourney, Chestnut, Cate, Bravo, Cuccio, Rainbow, Ortega, Snyder, Nettie, Clytia, and probably a few I forgot. Many are full trees, some only grafted limbs on larger trees. Flavors of the fruit vary from very sweet like vanilla custard to a caramel flavor. Here in California, the white sapote was carried up north from Mexico and planted in the mission gardens as it does so well. Wild trees can be encountered growing with no water or care on vacant properties. Pretty tough tree with a great abundance of fruit (don't plant it where you regularly walk)
WOW great informations! Yes our weather is great to white sapote, but to mango, black sapote and lychees i don't know, but is good to try! Thank you so much!