I'm feeling your pain here in Albuquerque. Granted, we're not nearly approaching such temperatures as you mentioned but normally in February we're accustomed to 15-20 degree nights and when I leave at 4:45 a.m. it's up to about 35. What really kills me about this winter was that there was only one morning that I was afforded with the opportunity to brave the snow. It feels great to beat your dry road time when there's 2 or so inches of wet snow out. Anyway, good luck with the summer...I don't envy your commute in the triple digits.