booter, the answer is yes, but I’m not sure what the chapparal area is (if it’s by chapparal high school, then no). santiago estates and Los ranchitos are the customs just North of temecula parkway, very much in the cooler microclimate. Just use the pechanga casino as the epicenter, the more you go east and north from there, the hotter it gets, maybe a degree a mile or two. The exception is the western hills, but that’s all high end customs (de luz, even la cresta) from the other side of the hill it’s a straight shot to the ocean, that’s why they grow red grapes on the western coastal facing hills but for the townfolk, santiago is about as good as it gets.