What is the temp in caves?

Away from entrance effects the mean air temperature is usually that of the mean annual air temperature outside.

It may be skewed by, for example, the cave descending to a blind choke. In that case it will tend to be colder at depth as air#s density increases inversely with temperature so ssinks to the lowest place.

The old-fashioned, pre-refridgeration Ice House used that principle to keep the food-preserving ice frozen as long as possible.