Bontrager RXL Thermal gloves. By themselves down into the 50s, with glove liners below that.

I don't know of that particular model is still available but there's probably some unsold old stock around. These are soft, flexible gloves, with a tough palm protector but no padding. Now that I have my bikes set up properly and am accustomed to riding I find my gel pad short finger gloves more annoying than helpful. The RXL Thermal gloves are comfortable even in summer, and reasonably wind resistant and comfortable with good liners down into the 40s, without sacrificing dexterity. I have long thumbs and little fingers and most rigid shell gloves don't fit me properly -- binding the thumb causes pain and numbness after a while. No problems with softer gloves like the RXL Thermal.

I've tried similar gloves from Pearl Izumi but the thumbs/little fingers didn't fit my hands properly. Other than that the material and construction appeared to be very similar.

I've had these for more than 3 years, lots of use, lots of washing, a few falls that saved my palms and knuckles from scrapes. The gloves are still in great shape.

I bought the Bontrager gloves in size large to leave room for the liners without compromising air space that makes the liners effective without compressing skin circulation. I had some old poly ski glove liners from the 1980s but the microfiber liners/gloves I bought for $5 at Walgreens last winter are much better quality.