Ill be hones not sure what you are thinking of rain I think if it's hammering down blowing 30 you might have a long day , I have seen more big bucks in a light steady drizzle during the that last week of October to Mid November than I have seen on a blue bird day. Just my take . maybe my luck , I love a nice overcast day with showers just seems to get them bucks moving in MY opinion..
I will sit through the last half hour of a cell because a lot of times as soon as the rain quits the deer will be on their feet. I have seen deer during rain showers as well and have also gotten soaked and seen nothing. Typically I don't hunt in the rain anymore but will head to the stand as soon as the system has almost passed. Now if it is a light rain between Halloween and shotgun season I will sit in it as long as I feel I would be able to trail a fatally hit deer. Shot a good buck a few years ago on Black Friday in a constant mist.
I also agree with this. ^^ A little rain can also conceal your movement/sound when approaching your stand.