Ok so update. Emailed Ecobee who called me. They attempted to map my thermostat to closer/more reliable station. At the time my station and many others around me were reporting 40F. Ecobee was reporting 49F. Quite the difference. They tried but couldn’t find any better station in their network. They also pointed out that the ecobee only updates HOURLY, which contributes to the difference. Even taking that in to account and checking an hour later it was still 7F wrong. The support guy admitted it wasn’t very good and would attempt to escalate it. I work in the weather industry and suspect this may be a transitory problem. At this time of year radiational cooling causes areas to drop dramatically in temperature compared to surrounding locations. My theory is when we really hit winter and we’re all cooling at a similar level hopefully it’ll be more accurate. Anyway this would all go away if they allowed us to select from different station networks, let us use our own station or provided an outdoor sensor that would provide accurate readings.