Temperature in Mpls at 3:00pm are 28 F and Windy is reporting 19 F. Should I use that as a baseline for error?

Your Dew Point Temperatures are OFF by 10 degrees to the HIGH Side from NOAA, Intellicast, VentuSky.

Todays Dew Points 6/24/2018 12:01pm - Mpls, MN NOAA - 64 Intellicast 64, VentySky 64 and Windy 73 degrees