[Motorcycle Jack]

Why not see if you can get one of the infrared reading thermometers and find out where the cold ingress spot is? I would then either seal around the window with some expanding foam - if that's the leak area. Or find out if the window has blown the seal between inside and out glass. I doubt the weep hole is the problem as the weep hole doesn't exist on my themo-paned windows. I do get some cold coming off the glass but no breeze.