35F, 4" of slush compacted down to 1-2" of gelatinous slush/ice stuff. Made it most of the way fine but wiped out on black ice in the last intersection before work. I was going really slow at that point so no harm done. Left a pannier behind in the intersection, was wondering why people were honking at me. At first I thought they were annoyed that I slowed them down by falling in the intersection, but I did stop to look and noticed that something was missing. Whew.
The trip took 45-50 min vs the typical 30, and almost all on the 22t granny ring though I did go to the middle ring for a couple of quick downhills.