Extreme Cold

We have had temperatures in the -25F and colder range for about 10 days, with even a slight breeze it makes it feel like -40F and colder. I work as a commercial truck driver, doing local pick up and delivery, and I use a hydraulic tailgate daily for most of my customers. Because of the brutal cold the tailgate ran extremely slow, more than doubling my delivery times per stop and resulting in me being outside in the weather for 3 to 4 hours every day. I dress in layers, but my feet are usually the first to feel the cold, followed by my hands.
Last week I wore a cotton t-shirt, a polyester/cotton work shirt, a hooded fleece sweatshirt, and a heavy 2 layer coat with a denim shell, plus a snug fitting toque. This keeps my core relatively warm, plus I wore cotton long underwear, heavy denim pants, and lined nylon windblocker pants, plus a pair of lined heavy gloves. By the end of my work day Friday I was completely exhausted from the cold and had a nasty migraine.
Now the cold is breaking, and by next Monday temperatures are forecast to reach close to 50F, bring it on!