Your urine should be approx. the same temperature as your body. 37.0C 98.6F
Factor in room temperature(22C), so the temperature of the urine will drop slightly if held in a container for a length of time.
I have no idea what the specific heat capacity of urine is so I can't really speculate as to the end temperature. But most likely around 30C...as urine is mostly water.
Fonz