I have used these gloves on several winter rides in temp in the upper 20s to lower 40's. My hands have been numbing cold every ride. I would not recommend these gloves below 45 degrees. They are fine if your not moving in these low temps, but once you get into a normal speed of 17-22 mph, your hands will freeze up. I will not use these in temps below 45.
I'm rating it 3 stars for fit and quality of the materials.