If you could store your figs at a constant temp., what would it be?
The reason that I ask is because I just finished up insulating my garage. Would 40 degrees be too warm? My thermostat only goes down to 40. I could store them on the other side, opposite of the heater/blower. It would be a few degrees cooler.

40 should be fine for dormant figs

I agree With Bob (just keep it above freezing and below 45F and the plants will be soundly asleep).

Art,
 40 is an acceptable temperature for dormant plants. 46 would be to high, you can go as low as 33.

That sounds good. I just didn't want to risk it, it gets pretty cold here in Jan. and Feb.

Here mine do well in insulated garage in a colder zone. Just the first season ones sometimes do not make it after that i not worry much.

Art, I stored my in a insulate unheated garage last year and they did fine

I don't know that it's related, but Jeff Moersfelder told me they keep their cooler set to 38F for dormant cuttings for distribution from Davis GRIN.

Dont forget to keep it dark!

Thanks for the info everybody. I have an outdoor wood boiler that I tied into my garage. I wanted to heat it a little in the very coldest months, ie: Jan. and Feb. It will make it easier on my wife when she is loading our 3 little kids.
I just hope it doesn't cause any problems for the trees.

I have stored figs in my garage for several years and don't let it get below 22 deg F.   I have not had any problems with temperatures that cool and for extended periods of time.   As mentioned in posts above, temps above 45 may prompt them to wake up.    Keeping them in the dark is a good idea and don't let their soil completely dry out.
Ingevald

Last year I got down to -16 Celsius on the coldest days of winter (1 or 2 days), the panachee and the black maderia didn't have any damage and grew fine with everything else, hope that it works that way every year.

I winter my figs in my garage which has plenty of windows. It never gets super cold as I'm in zone 7. I make sure they don't completely dry out. I usually don't have a lot of 1 gallon plants by fall but this year I do so perhaps I'll learn a few new things. I've had great success keeping my plants - figs, fruit and flowers - in this garage and I'm not convinced needing a dark space is that important as they certainly are in full sun when going dormant in warmer areas. Although the sample size is very small I would note that the only time I had problems over wintering was when I had my figs in a dark place where the temp got too high. 

I wonder just how important it is to have the figs dark. Many times it's the decreasing or increasing amount of light that causes things to change their life cycles. This "photoperiodism" effects both plants and animals and I know in many cases it's certainly the duration not the amount of light that is important. I can't see any reason to keep the plants in darkness as it doesn't mimic anything in nature or in their life cycle even in their original range. If anyone has done any experiments on this or has done any home work that says anything different I'd love to hear about it.