[robroller]

Unfortunately it is not common in a state with sub 20 % for humidity. I would check that the system was properly "burped" for air, the ensure the blades of the cooling fan are pulling air across the radiator if behind it or pushing if in front..If those are good to go I would be concerned that it is running way to lean, your timing may be incorrect, or leaking head gasket which is pressurizing your cooling system.