I am a first year beekeeper. This is the first Winter I have had bees.
I cracked the lids off my beehives today (Central California - 60 degrees) for about 15 seconds each. I didn't pull any frames, just took a very quick look to see if bees were there.
One hive had a small cluster of bees on top of the frames.
Two of the hives had significantly greater numbers of bees, but were profoundly wet inside. Droplets of water were all over.
Is this a problem that I should address? If so, what steps should I take.
Additionally, I lifted the hives a couple inches, and they seemed a tad light. Would feeding be in order?

I appreciate any expert help.