FYI, that yellow section of the temp (red) line is the Snow Growth Zone, or DGZ - Dendrite Growth Zone. You want to see the temp and dewpoint lines about merged as you go up in altitude (near saturation) AND have the upward vertical velocity (UVV), air motion, which is shown by the horizontal bars on the LH vertical Axis, aligned with the DGZ. This sounding is sh*t for any precip as the column is dry in an arctic airmass and what little UVV there is, isn't well aligned with the DGZ. So...upshot...effin cold and low humidity.
Edit: this is more for @sferic