Going out today, in probably close to the coldest temperatures I've done a road ride. I've done a couple of early AM rides that were in the low 30s, but they were very short, 10 miles. And, I've done a couple of mountain bike rides in the high twenties.
But it's very clear and sunny, with no wind. I may try using my PI Amphib gloves again. I was spooked a few years ago when they got caught in the shifter. My solution has been a thin pair of Ibex wool glove liners under a light weight/vented pair of full fingered gloves that are a size too big, with the addition of a chemical warmer when it's really cold. This way the gloves are thin and there's room for the warmer. But, the cheap warmers we bought a couple of years ago are running out of juice... am in the process of ordering more (different brand), as the x country ski season is approaching. Yesterday, I noticed my fingers getting cold near the end of my ride. When I got home the warmers were cold!