Because the mountain's latitude affects the temperature.
When you live near mountains, it is very windy at the bottom of the mountain,when the wind is coming from the direction of the mountain. It is the downdraft that makes it not pleasant, especially in...
The higher you are on the mountain, the colder it gets and it gets harder to breathe.
It will block some rainfall.
Most of the time, the wind can't get past the peeks of the wind. So some towns have more wind then others.