Yeah, GSP seems normally does really well with temperatures in my location which is what makes the last couple mornings surprising. This morning it made a little more since because the clouds moved a while earlier than expected which held temps up, but yesterday morning they had gone a good 5 degrees or so below the coldest guidance (I’m at the point of not ever considering temperatures on the CMC with how bad it’s cold bias is).I'm to the point where whatever my forecast low is, I add a 2-3 degrees to my expectations. Thankfully though that doesn't seem to apply to when there's a winter storm. NWS seems to get pretty darn close to the surface temp during a storm. Odd, but my observation. No idea why the distinction.