naw, you'll be fine. you do not really want to open the hive up if it get's sub 50 degrees for prolonged periods though, and certainly not when it is below freezing/etc. The bees are not in to much danger right now if it is above mid 40's. They will get cold, but not so much of a issue as long as it warms up later, and doesn't go colder later. IE they have the chance to rebuild the heat in the hive before it does reach dangerous levels or prolonged coldness. Also of course you do not want to do it if it raining/etc so much and so forth. You should do fall inspections and make sure things are right. right now is the time hive beetles/etc need to be dealt with if they need to be dealt with, or at least it is a good time to do it, and getting winter prep on its way, imo. although I'm in Michigan and won't be finalizing things until probably mid Nov. really, I do not like to break their 'patches' with their propolis they use to seal cracks/etc. to late in the year.