If it is cold and wet, try gloves with GoreTex. They are warm, not too thick and keep your hands dry. They are not as bulky as normal winter gloves. If it gets colder, go for the "onion" style of clothing: use many layers you can add or remove as at gets warmer or colder during your ride. I really enjoyed biking in winter, I'll definitely ride through this winter, too (if it doesn't rain too much, I don't mind the cold, but rain is... yuck).
Also take a look at
http://www.icebike.org/
Last winter we had below -20° C (~ -5 F?), which is quite uncommon for central Germany, but I kept riding. I relied on:
Clothing:
- long underwear (Odlo, medium weight)
- Long cycling tights (Crane, brand of Aldi, a supermarket chain in Europe)
- Long cycling jersey (also Crane)
- warm socks (Falke TK2)
- gloves (Mountain Equipment Coop), woolen gloves, GoreTex gloves (different combinations depending on temperature and humidity)
- Specialized Defroster MTB winter shoes
- Vaude overshoes (softshell)
Bike: old Peugeot road bike (late 70s)
Tyres: Schwalbe CX-Pro cyclocross tyres, 30x700. I only crashed twice on black ice... this year I will try and see if I can fit a Schwalbe Marathon Winter (spiked tyre) in the fork (no chance in the rear, clearance way too small).