It rained from the start at about 1am, never stopped even while it was pouring sleet and teeny ice crystals (snow?). The rain finally stopped about 10 minutes ago at the same time it popped to 33°.
That was the worst 3 hours of frozen-mystery-material removal in a few years. Thank goodness it was warming up through it not getting colder... ~2" of crystally, ball bearing like stuff that was very wet at the bottom. Yuck.