Well, it's -4 here with lots of ice about. Best temp in the daytime is expected to be +1, so that's not going to make much impression.
Totally agree about not taking risks. And the older you get, the less easy it is to recover quickly from an 'off' or to bounce rather than break. This week's weather forecast is the worst for a while around these parts - particularly the ice situation; snow I don't mind, but ice can be lethal. Last winter I had one 'off' on a main road that usually gets gritted. The minor roads and cycle paths were virtually unusable for a week.
I'd rather miss a few commutes and use public transport for a few days - plus by doing so I get to travel home with my daughter for a change, which is a bonus. Soon as the weather clears up, I'll be back on the bike.