I'm just giving a reason as to why it may be showing it as rain. To elaborate on it, the airmass to me prior to the system is pretty crappy. Heck, january afternoon and it's above freezing all the way to the Canadian border. Aloft it's cold enough but due to a meh airmass, southerly flow at the surface it's just enough to be rain. I bet though, if precip rates were heavier it may be a different story.