You have now a superb color scale. I just realize that I was talking about feet when of course the color scale is in inches.
You may want to reduce the blending specially for smaller snow depth. You just need to reduce the gap between each colors steps. For instance:
0 - 0.09 Grey
0.1 - 0.9 Very light blue
1 - 1.9 Light blue
2 - 2.9 Sky blue
3 - 3.9 Blue
i.e. all figures like x.1 rounded to x .... except 0.1
If you are perfectionist you may also try to change all figures like x.9 by x.99. It should work.