I spent all day in TN scouting for next weekend. Crappy weather wasn't bothering them down there. Plenty of strutters down there as well as in fields coming back through KY. Good luck with your little brother next weekend. Hope he gets a good one.
10 day forcast is mid 60's and sunny saturday and low 70's and sunny sunday. my personal experiance experience, bird don't work very well on great sunny days coming off cold rainy days. still hope that forcasts holds up, nice weather is better for the kids.
No matter what the weather find the feeding areas for the hens and have patience...visual scouting is key because when they are regular they are on a pattern that tends to stay in place for several days.