Once danger of extreme cold is past, and unfortunately the literature never seems to site exactly what temp that is, you should be fine.

I don't worry about apples if temps are above about -15F and have pruned older ones when temps immediately went below -20 without injury. I believe for apples, and it depends on variety, danger of injury from pruning cuts begins at about -25. It hasn't gotten that cold where I am for at least a century.

I always wait until about mid-feb to prune peaches and have had sub zero weather at that point without a problem. I'm interested in how cold others prune peaches without injury.

The reason commercial growers wait until active growth to prune peaches is to help fight off canker which an active tree can do by closing wounds more quickly. I don't have a problem with canker on young and vigorous peach trees so I ignore this issue.

I should have mentioned that if you're worried about pruning too soon you can always prune to long stubs and finish the job later.

H-man: good idea about pruning to long stubs, sort of the best of both worlds.

This year will be interesting as far as when stuff starts to come out of dormancy, the entire winter has been characterized by normal cold spells followed by unusually warm warm spells, the trend continues. If I recall correctly, all those 32 deg.+ days past mid Dec. have been taking away from the cold hardiness of the buds and wood, if so, I certainly hope we don't get a whopper cold snap.