It was indeed pretty juicy out there this morning.
My rain lessons learned over the past years:
1. Lake winter riding boots not only keep your feet dry, but are good for back to back commutes because they are waterproof (if you keep the leather treated).
2. If you do get caught out with your regular shoes, and they get soaked, stuff newspaper in them - works well to draw the moisture out. Change out the newspaper every 2-3 hours for best results.
3. A helmet with a visor helps to keep the rain out of your eyes.
4. No matter how breathable my outerwear is (I am a fan of Showerspass), I still generate enough heat/sweat that my riding clothes get wet, so I carry a full change of clothes for work.
5. Always carry two pairs of gloves in the winter...one for riding into work and one for riding home.