I think everyone is full of shiznit! I'm her now, I rode today and it sucked, at Patrick's day and it was Icy crap all morning because snow is melting because it is so hot. In the afternoon it was good for about 2 hours then it got hot and sticky like peanut butter snow! I think the season is done!
RE: question about conditions in a month: Mammoth is one of the best ski resorts in US for snow retention. Lower mountain might be more spring conditions, but upper mountain could have winter conditions. Eagle & Canyon Lodges and their lifts close after 3rd weekend in April.