Know in advance:
Medical/dental procedures: I need to know the detail of both the procedure and the outcome, even if the information is challenging, to prepare myself.
School cancellations: DH, DD, SIL, and I all work full-time. It would be nice to know of school closings and late starts the evening prior, rather than at 6am, day-of. I understand they don't want to close if they don't have to, but it is SO challenging to make last-minute childcare arrangements.
Travel changes: I love that I can look online and see if there are construction delays, traffic issues, lousy weather, etc. on any of the routes I might be driving when we travel. Helps with my planning and timeline.