I can't really speak to what it'll do out in the lake, but I can tell you that when I'm fishin off the pier in Pt Bruce, the fishing has seemed to be better just before an approaching cold front arrives, (day before and morning of when its supposed to cross in the afternoon) whether it rains/storms or not. I've fished in the rain as well and been laughed at, but those who were laughing stopped laughing when I pulled my basket out of the water and showed them what I had caught while they were sitting in their cars waiting out the rain. (If its just rain, I have rain gear, but I won't sit out there and fish in a thunderstorm. I'm maybe a bit crazy, but I'm not stupid. ) but depending on how hot it is, or how hot and humid it stays after the front passes, especially if it fired up storms and a couple days of wind, the fishing has been terrible. ie, June 19 I did really well, got that limit I showed. Went back on the Monday (June 22) and brought home 20 more. Then that cold front went through, brought storms that day and wind for a couple days after it, and the fishing from the pier hasn't been the same since, in fact, since that happened, it's been as bad or worse than last year.