"The site is 'high desert' and temperatures can run to 120 F (49 C?), and the sun is 'very bright.' "    ~   JohnInKansas

Oh, give us a break!

The highest recorded temperature ever in the United States, outside of the Furnace Creek area of Death Valley, is only 118^o F........... Ever!

Expect about 85-90^o F at Burning Man with low humidity, unless it's raining, which is rare.