I remember what Denver in the "spring" was like from when I lived there thirty-odd years ago. Sounds very very familiar.

Esp. as I'm living with similar (if not so drastic) conditions here in western Washington (where it is not normal and we're all fed up). There was snow on the ground when I woke up Sunday morning. Granted, it was melted by Sunday afternoon, but it was the principle of the thing.

I hope your flight went well...