What the weather was doing at 253 is irrelevant. Your plane made several other trips that day, perhaps to Florida, perhaps not - and as accumulating delays take their toll, eventually, you will not be getting a plane. Your local weather (and indeed, that of your destination) at the present time have little to do with it, many cases. The fact that they gave you 5000 miles is a bit of a hint that perhaps something else was in play, since they owe you nothing with weather delays.