At 7:15AM today: 41ºF with a Wind Chill Factor allegedly making it 33º
long sleeve base layer
long sleeve wool jersey (Ibex Amparo)
toe covers over my regular cycling shoes
polypro glove liners under my regular cycling gloves
..and by the time I'd gone about 8 miles I was still too hot! Oh well, it'll probably be just right for the ride home tonight.
In hindsight, I should have had something covering my ears.