Not sure if your hearing is rescheduled because of weather? Wondering if the District Office is open for business due to weather or otherwise? The Social Security website has a running list of closings and late openings and early closings. You can check the status here.
However, you need to know that that website is pretty poor at posting accurately and timely, so you are better off verifying the information before leaving for your hearing.
As a general rule, the federal offices tend to be a bit more hardy, tending to remain open longer than most state offices.