The front on Friday was an occluded front that had clouds and some slightly cooler air but not a true cold front. It was always supposed to be in the upper 50's and 60's this weekend (always as in the last few days.) If the NWS was calling for low 50's, take it up with them for their inability to forecast. Here is the GFS from Wed for today. Sure, it got 5-8 degrees higher, but it was not supposed to be BN this weekend. The Icon was closer to reality. Again, this is the model from 5 days ago.