The best advice I can give is buy a book. I have extensive experience of lizards in N. California and I am not sure where your Western Whiptail was collected but if it was collected from N. California 105 is way way to hot. I commonly don't observe them out over about 80F and then its pretty much in the shade only venturing into the sun to get away from me or just to get to a better bush........ Again pick up a book or Google them and learn all you can, this should be done before aquiering any new pet.
Foot Hill Reptiles