kind of a loaded question....
i have killed more than a couple in the rain.... a couple in heavy rain... something we have to deal with around here. i much prefer normal warm and dry weather, but we don't get to pick the weather during season.
the season you are hunting and timeframe within factor in a lot for me when it comes to rain. archery season i don't like rain late in the season at all.... the bulls break off on their own and are tougher to get on. usually have to get really close to get one to answer, and on the coast, in Sept, rain means south wind, and south wind almost always means messy wind everywhere.
rifle season when i'm taking friends and family, rain is ideal.... archery season it isn't to me. i don't like tracking in rain... on the coast, it's often waist deep vegetation, so following tracks is out of the question, and i don't like how south wind acts in that time of year.
my hunting in the rain depends on the situation. if i think i have a better chance of blowing a bull out i'm hunting due to wind, i'll probably go walk out some areas i have been meaning to looking for sign. i'm not sitting around because it's rainy, but i certainly might change strategy.
right after a good rain can be really good, especially the days it pours all morning and clears up early afternoon. my absolute favorite elk weather is hot and sunny, then a marine layer moves in with heavy fog and drizzle in the afternoon. it can be just epic.
love chasing blacktail in the rain, but archery elk, not as much.... but i do hunt it anyways, because there are only so many days in an archery season