That sucks. Have you been watering in this drier period? I've never had issues with not seeing garlic shoots after warmer temps. I normally plant right around Halloween, and in fact, I seem to recall that I've had bigger shoots than normal after warm Novembers.
But...you just inadvertently reminded me to water my garlic!
We planted about three weeks ago (a couple weeks later than normal), but I didn't water after planting since soil was still a little moist. Then we were out of town for a week and I totally forgot to water when we got back. I didn't poke around looking for initial shoots, but I hope the cloves didn't shrivel up!