Since retiring the solar powered weather station & displaying just downloaded temperature from wunderground, the display finally got tested by an outage.   Instead of showing a frozen out of date temperature & ceasing logging, it switched to the dashes as programmed & continued logging indoor temperature.

After having nightmares about updating the wunderground URL every 2 months for the next 50 years, it turned out it was Xfinity going down for its annual 48 hour manetenance window.  Lions would prefer if Xfinity worked all 52 weeks instead of 51 weeks per year, but at least the lion software worked.