I certainly don't have those low temperatures problems but, is noticeable enough with the average temps we have here in this part of Australia. Temps in Winter vary from -4 to 30 C and in Summer from 15 to 48 C, I can certainly notice the reaction of the CA in these different conditions.
I normally use medium CA all around, but in winter I use a little more thin CA than in any other time of the year. I use accelerator at all times, unless is very hot temps in the shed (like now...!
), in winter I find that using thin CA, its dries quicker with the help of the accelerator, I may need more coats tough, which is obvious...!
I also use often, my heat-gun to get things drying faster, a hair-dryer can do it too, making sure (particularly with the heat-gun) you don't put it too close to the blank. I test regularly the right temperature by putting my hand in front of the blank and keep the heat-gun at about 2' from it. This distance varies depending of the outside(room) temperature, you know that you got it right when you can keep your hand near the blank and be very bearable. I also like to move the heat-gun in a left to right in slow motion, voiding overheating in one spot only...!
I have not found any problems by using regularly accelerator, nor I have had any problems in using the heat-gun to accelerated the CA drying time, HOWEVER, doing this in a well ventilated place is a must, fumes from the accelerator and CA are flammable and volatile, as is the risk of setting the CA on fire if too much heat is applied. Remember, either heat-guns or hair dryers work on the principal of open flame from the heating "elements" so, think it through and make sure you have the right conditions/environment to use this drying method...!
Cheers
George