Besides, if Chromedome can withstand being in the vacuum of space, I'm sure that he can withstand being in the Arctic.*
--------------------------------------------------------
*The coldest temperature in the Arctic is -50°, which isn't even the coldest place in the Northern Hemisphere. That would be in the interior of Russia's Far East. The rural district of Oymyakon (Оймяко́н) the lowest recorded temperature is -71.2°. The coldest place on Earth is Antarctica, with the lowest recorded temperature of -89.2° (coincidentally recorded at the Russian Vostok station). In space, objects can become as cold as -270.45°.