Weather resistant not so resistant

I have been placing the spotlight cam battery under the eaves over the last couple of years with no issues, however since I place it out in the weather a month ago I noticed today the battery is drained even I had a solar panel connected and the lens fogged up on the inside. We did have a few days of rain in the past so I suspect the water has found its way in but isn’t the cam suppose to be weather resistant? I’m now out of warranty and have no ideal how am I going to fix the cam or do I need to purchase a new one.