Good snow up top - windy Monday, Tuesday should be better. Watch for ice and hard packed below McCoy where it rained and then froze over the weekend. Hopefully grooming equipment and warmer weather improves mid mountain over the next few days.
If you want a good day of skiing, stick to the groomers and you will be happy. Weather isn't too cold and the snow is good.
If you like powder and enjoy to ski steeps, this isn't the time or place. Packed snow wherever there aren't rocks.
Half the mountain isn't skiable right now. Trees, glades are out of the question unless you enjoy to ski over tree stumps, giant rocks, roots, etc.
Groomers at Mammoth are world class... wide, steep and long. Can have a 10km vert day without any issues. No lines right now either...