How long can I store cigars in a ziploc-style baggie?
It depends entirely on your ambient climate because every time you open the baggie the air within will be exchanged. In some climates cigars can be kept in ziplocs for literally a few months with no problems, while in very dry climates 3-4 days tops may be the serviceable limit of using plastic bags. This would include Arizona, Nevada, parts of Southern California, New Mexico and Colorado.