It's too dependent on surface temps when once you're below 31 or 32F they don't make any difference at all.
The key is to figure out how efficiently snowflakes are produced (maximized around -15C) and the favored crystal type which impacts the density of the snowfall (ratio).
For any real skill you have to look at where lift is maximized and at what temperature and also the depth of the DGZ (-12c to -18c).
Kuchera would do OK if you're right around 32F because it would skew numbers down in that case not due to bad snow growth but due to melting/compacting.