Not too bad
It isn't quite that bad, I know a lot of people who keep theirs parked outside down here. Mine was too until hangar space became available and at a reasonable price. There are hundreds of planes parked outside down here. If you want to be super safe, get a Bruce's cover or something of the like. The winds only push ahead of fronts and even then it is rare they keep going for long. The sand here is also very light, kind of like moon dust so damage is next to nothing. There are guys down here with exposed lexan canopies that have been that way for years. If you are parking outside and the commute won't kill you, the Bermuda Dunes Airport (KUDD) is the best. It is privately owned but publicly operated. Since doesn't have to handle the same size aircraft, the tamarisk trees are closer to the runway to help keep sand down. Crosswinds sometimes are tricky, but I have landed in gusts exceeding 30 kts on a crosswind here. Most of us desert flyers are used to it. If you need more info, PM me and I can give you a call for up to date info. I am usually at each of the three airports once a week. Oh, almost forgot, Sundays at KUDD they have the best fried chicken around.