Hi sleepytime1,
There are some instructions from one of our members in post #5 here and there are also some instructions here and some videos here and here that will show you how to roll and vacuum compress latex.
Once you have rolled and compressed it you can store it in a box or in plastic in any position you wish.
Normal temperatures in a home would be fine but very high temperatures could break down the latex faster over a longer period of time than more normal temperatures.
Phoenix