Hello Topper-
I did Cactus to Clouds yesterday (Sunday) and did not see anyone using snow shoes the entire day. A few people had crampons or minispikes, but they were not necessary. Between Long Valley and the peak I would estimate that approx 50% of the route is still covered by snow. Post holing was not a problem. The nice thing about the trail to the peak is that there is not a lot of exposure (as opposed to, say, Mt. Baldy) so even if you slip you are not going to plunge down a precipice.
All of what I have said assumes no further snow, but it looks like we're heading for some unusual weather. There is a 90% chance of snow on the 18th, with wind gusts predicted to be up to 60 mph. Unless you are an experienced winter hiker who feels comfortable navigating in adverse weather, the 18th might not be a good day to attempt the peak.
Below I have pasted in the forecast from NOAA for the next two days. At the bottom, I've provided the URL for the NOAA website so you can monitor the changing weather.
Tuesday: Snow likely. Cloudy, with a high near 40. Windy, with a west wind around 30 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night: Snow likely, mainly after 11pm. Cloudy, with a low around 24. Windy, with a west wind between 30 and 35 mph, with gusts as high as 60 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Wednesday: Snow, mainly before 11am. High near 33. Windy, with a west wind between 30 and 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
NOAA website for Mt. San Jacinto:
http://forecast.weather.gov/MapClick.ph ... tType=text