That's generally true anywhere, not just in California. It's called the "adiabatic lapse rate".
As you ascend the mountain the atmospheric temperature will decrease by about 6.5 degrees Celsius per 1 km (that is why the tops of high mountains have snow on them).
As elevation increases temperature decreases reaching the coldest altitude (around -90 degrees C). Once you ascend into the Thermosphere (56 miles high) The temperatures will be extremely high, ranging from 200 degrees C up to 500 Degrees C as you climb in elevation.
5 degrees = Mount Snowdon
down to 64 degrees
The Adirondack Mountains are located in the Northeast of Upstate New York. Their exact coordinates are 44 degrees North and 73 degrees West. The elevation is 5,344 feet.
30 degrees Celsius in the summer and 18 degrees Celsius in the winter
Air temperature drops an average of 6.5 degrees Celsius per every 1000 feet.
generally speaking, for every 100 m (330 ft) elevation increase, the temperature drops 0.6 degree Celsius (or 1.08 degree Fahrenheit).
-5 degrees Fahrenheit
about 60 degrees
70 degrees Fahrenheit
107.3 Degrees