HELP! All my outside Christmas lights went out, were snow covered, but warmed to the 40s and rained! HELP!?

Ok, I need an explanation please before Christmas. For the past month since the lights have been up, they have been mainly snow covered. But this weekend, temps were in the 40s and rainy. The lights have been on every single day, including today. But, I noticed all them out. So I checked the TEST/RESET switch in the bathroom. I pushed it in, but it went right back out. I know it does this when we are using too much power. But it never did this before, where ALL the lights went out. Why would they go out now today? Why didn't they go out on November 24th, when the lights officially went on? Could this be due to rain getting to plugs, or something else. If a rabbit bit a cord, why would they all go out? This is a major problem, because we are one of the main decorators in our neighborhood for the holiday season.