Too late to try?

[homesteader]

Ha! Sometimes heat is an issue. I breed all my does in the evening or early morning. To answer your question would depend on weather the pens are in out of the wind or not, as long as the wind is blocked i would say go for it. Make sure you have more straw in the nest box. Here in Tn And Pa I've had no problem. In fact I'll breed 3 does in Feb for new breeding stock.

 

[Rocky Knolls Rabbits]

I do have it blocked from the wind and I made the hutches so I can pull off the plywood walls and put up rabbit cage wire to allow air through in the summer. If I would have thought it out I would have put the wire on the hutches then screwed the plywood overtop the wire, but it won't take much to fix that in the late spring. I now need to make the nest box out of the scap plywood before it gets too late...procrastination has a way of kicking you in the behind.

 

[Petit Jean Bunnies]

As long as you have an enclosed barn of hutch that you have them in there is really not a problem with winter breeding. You have to make sure the kits don't freeze to death due to exposure, but I've noticed if you put a heat lamp on them or a heat pad under them, and keep the drafts out you should be good!
Another thing for future reference would be to save fur that the mother pulls for her spring and summer breedings {when she will most likely pull more due to the heat} and save it for winter breedings in a little ziplock baggy with a label to know which doe it is from. It will just help to keep them warm and safe with all the extra padding.