WeatherUnderground.com: I am getting discontinuity or spikes in the data on Weather Underground.
If you are seeing graph discontinuity for temperature and dew point and possibly other data on WeatherUnderground.com, and you do not see this issue on AmbientWeather.net, Wundeground.com has a known bug. The best way to resolve this is to create a new weather station.
To create a new weather station, visit:
You can report the bug to Weather Underground here: