Thanks Mona
I actually have better luck with the rebloom scapes setting pods. I would say it's the heat even if you are getting done when it's still 80. Remember the pollen has to go through the pistil and some daylilies take longer for that to happen than others; the heat will sometimes cook it before it gets to where it needs to be. I have noticed sometimes when it's hot the tips of the pistil look pinched. I have broken some of the pistil off to open it up and then pollenated. I don't know if it helped or not because I don't mark the ones I do this on. And even though the temps say it's 80, for example, it feels hotter (to me anyway) which could be from the solar activity. It's just been a strange season all the way around starting with the winter.
If I were you I would get the pollen you want to use the day before or if you saved it use that and then go out really really early and dab the pollen and this may give it time to get where it needs to before it gets hot. I have been known to pollinate at 6:30 am because I have too much other stuff to do later.