I ride an enduro motorcycle that has shields for the hands. That feels much more comfy than riding bikes without those shields (+1 on the windchill
Ration sweat. Proper garment for the upper body and isolating forearms and legs may also help. If you are in a mode to disipate the heat, there may not be enough to heat your hands and feet.
I must admit though that cold hands or feet a rarely a problem for me.