Why are some of the outlets and light circuits out in my home?
This is an outage.  Call the electric company.

They should respond immediately, 24x7, and for free... unless coincidentally it's right after an ice storm or windstorm that clobbered power to thousands of your district's customers. 

If you're going "I can't, it's the weekend and the office is closed until Monday" - wrong office.  Every power company has an emergency number to report downed wires 24x7.  That number is entirely appropriate for reporting outages.  Yes, they do keep a bucket truck and crew warmed up 24x7 because wires go down, and that can't wait.   Our PoCo sent one out on a Sunday afternoon, and I stuck around to run around and notify neighbors and shut main breakers. 

Sometimes the problem is inside your service panel, and the PoCo doesn't fix that... but odds are what changed is outdoors, and thus, in their wheelhouse. Service panels don't have weather inside them.