In my opinion you care about two things, only one of which will possibly
be in a ski report.
1. Amount of snow fall. Most importantly in the last day or so which will have a strong effect on surface conditions and may effect cover. Somewhat less import is snow fall in the last week or so which has some effect on surface conditions, more effect on cover. Next up is amount of snow fall season to date which has a strong affect on cover (including what's open). All this into may
be in a ski report and might
be accurate. You get local variations on different slopes and exposures and I'm sure mountains measure at the most favorable spots. Still, if you are familiar with a mountain and track the reported and actual conditions over time, you can adjust your impression based on experience.
2. Weather. This can be a bigger factor on conditions than 1, particularly if it hasn't snowed in a while and/or you are on man-made snow. You do not want to look at an area report for weather. I always go to http://www.noaa.gov/
for weather. You care about temperature on the current day maybe more importantly, you want to look at what the weather has done in the past few days. Has it been cold, warm, cold? Has it been cold steady for several days? The history of the last few days along with a the forecast for the current day are probably the best indicators for the day's conditions.
The only thing you really have to get from a ski report is how much and where snowmaking has been done. That's totally within the mountain's control. Then add in the weather factor yourself. Have they made three cold nights in a row and is it still cold? Did they make snow a week ago and then it got warm for two days and it's cold again?
If you ski the same place day after day, after a while, you just track what the weather is doing and can guess the conditions as good or better than any report.