It was 68F and cloudy when I woke up. It was 66F and storming when I rode to work. We had flash flooding. A local viaduct was closed due to high water, I went around the cop car blocking the road and tried to ride through. I stopped just before the water was hub-deep and turned around. I was carrying a laptop and didn't want to drown it. The cop laughed at me when I came back by him.
I was prepared. I had dry clothes and a towel wrapped in plastic. Now if only my cycling clothes will dry before I have to put them back on....