By now it appears that the admin of the new WUnderground is
either unwilling or unable to accommodate their patrons in regards to the
display of decimal values for temperature recordings. No surprise there. Perhaps whomever it was within their team that was responsible for this compromise approach to the interface felt somehow justified that whole numbers alone are sufficient when displaying Celsius or Fahrenheit readings - even though this represents a compromise of the integrity of contributors’ weather data from their PWS.
The basis of this post is not to persuade the admin team that this approach is wrong because this is most likely a futile attempt but rather to remind the viewing public why this is so.
Part of the problem perhaps is the insistence of the US to resist the adoption of SI units (the metric system) like every other country in the World. Since the US clings to the archaic default method of measuring temperature in whole degrees Fahrenheit (this is still the accepted method of The National Weather Service) certain companies not mindful of the Global standard think that this is okay and even suppose that conversion to even cruder whole degrees Celsius readings are likewise acceptable. However, WMO guidelines proclaim that the resolution of automatic weather stations should be in 0.1 K (0.1 C) with an uncertainty of 0.2K. (0.1 deg Celsius ~ 0.2 deg Fahrenheit). The meteorological community worldwide recognizes that modern instrumentation is sufficient to display it as such which is why practically every National Meteorological Service in the World records official temperature in a resolution of 0.1 deg Celsius. Likewise, American users have become accustomed to their own weather stations and MesoNets displaying in tenths of degrees Fahrenheit since the manufacturers of even the most basic temperature-recording devices have set the precision of their instruments to this level.To disregard the virtue of precision in the reporting of scientific data when it is conveniently available does the end-user a disservice and is an embarrassment to the supplier of this data.