Yeah, the socks would help at 50 degrees, but I have to agree with Gat. At 37 degrees, you're going to be bitter-cold very quickly.
If it's too late to get the gauntlets, wrap some aluminum foil and saran wrap around your wrists along with the socks. Give it a few layers (like 2 layers of foil & 5 layers of saran wrap). It will give you a little barrier between the wind and your skin, keep some of the body heat in. It's not as good as Thinsulate or other insulation, but better than nothing.
3 hours is a LONG time in sub-40 weather without real gauntlets. plan on frequent stops to warm up and try to stop each time before you feel your hands getting cold.
If it's too late to get the gauntlets, wrap some aluminum foil and saran wrap around your wrists along with the socks. Give it a few layers (like 2 layers of foil & 5 layers of saran wrap). It will give you a little barrier between the wind and your skin, keep some of the body heat in. It's not as good as Thinsulate or other insulation, but better than nothing.
3 hours is a LONG time in sub-40 weather without real gauntlets. plan on frequent stops to warm up and try to stop each time before you feel your hands getting cold.