It was nature's will that the body of a vampire be able to withstand extreme temperatures. They stood as one of the only species that had the ability to live in any place they wanted. Silas's biology was especially advanced thus shrinking the list of many weaknesses that plagues his kind.
The sun, for one, allowed him to bathe in its rays without the risk of combustion, didn't render his skin and flesh into cinders and certainly did not calcinate his bones.
However, on that first of Ostara, that very same sun treated him differently, threatening to set him ablaze at any second all the while exceptionally never gracing his nerve endings which kept on freezing the lower among his guts his heart sank.
At every failure, every place he turned to that didn't have Arabella further exacerbated his condition.
And those were a lot of places as everywhere he turned; there were zero traces of her.
