To what Mike said. Cold is all relative to where you are at. I was born and raised in the S.F. Bay Area. When I was growing up, cold, really cold, was somewhere around 50 degrees. Now that I have traveled a bit and reside in Illinois, 50 degress in the winter is downright balmy.
Hell, I'll bet if the temp drops below 50 in Hayward, Mike is out there using a blow-dryer on his flowers...
I actually meant to post this earlier but got caught up in a few things. Give us a little better idea of where you are "profile" and we can help a little more.
Regards,
Jeff