Nope, sorry, can't find any type of weather that's not good to run in, assuming you're being smart about it (properly dressed, hydrated etc.). Like most here, there are many reasons why I run. Some weather is condusive to good performance (upper 40s, clear, 5 mph wind) and some weather presents more of a challenge. Meeting those challenges make us strong. Probably the most difficult running weather I've dealt with is low single digit temps, several inches of snow and wind. When I finished my run and cracked the ice out of my hair, I felt like a STUD! While the run kinda sucked in its own way, it was worth it just to feel like I was more hard core than I really am.