Complete outdoor work while the products and equipment can still operate within their temperature limits. Clear drainage, inspect the roof from the ground, repair failed seals, and shut down seasonal water systems according to their manuals.
Move indoors next. Schedule heating service, check filters and alarms, review the emergency kit, and confirm that exposed supply pipes are protected. The exact date depends on local weather, not the calendar alone.
This checklist is a baseline for common systems. Local codes, equipment manuals, grass type, and the way the home was built may change the work or move it to a qualified professional.