Gravid adult female Sceloporus occidentalis (Phrynosomatidae) were collected near Pinecrest, California during June and July of 1997. Females were maintained on a mixture of moistened sand and peat moss until egg deposition. Eggs were weighed and placed in small plastic cups filled with a sand/peat mixture and incubated at 27C until hatching. The specimen used in this study hatched on July 31 after 44 days incubation. Live mass was 0.6g.
(80.6 fahrenheit)

What I found out researching this topic. My female laid her eggs July 3 and I have been incubating them at about 80.5 F. She is in a big pen with her long time mate, and I am hoping they may produce another clutch for this season.
This is my favorite lizard, of all the many species both tame and wild!