Dear Chris, Blick, Jos, and WeatherCat troubleshooters,
I have a Vantage Pro2. Three times now I have had issues where starting at midnight the data the console displays and sends to WxCat is incorrect. The temp outside may be 50 and right up until midnight it's correct. After midnight it'll be 64 or whatever, it just jumps to a completely different value. The most recent occurrence was on the 8th. Everything was fine on the 7th, then at midnight the data wasn't right. Then at midnight the next night, between the 8th and 9th, it corrected itself.
As a general rule, I second Jos recommendation to change your station transmitter ID. My console picked up another station that I didn't know existed. So unless you are so remote that you are sure there are no other Davis stations around, it is a prudent precaution.
Is there any pattern to the erroneous data you are observing? If you were picking up data from another station, the values would be comparable. Your example of 50˚ jumping to 64˚ wouldn't represent that. I just made a quick glance at your data the long shot that came to my mind was if the console was somehow replacing the indoor temperature with the outdoor temperature.
The other two times I noticed the issue and corrected it by removing power to the console and starting it back up. This time I didn't notice there had been an issue on the 8th until just a little while ago. You can see my station data at the link below.
Solving a problem by power-cycling a device is an indication that is suffering from some sort of hang-up in the firmware code that it executes. See if you can get a handle on what the errant temperature value is coming from. Unless you can establish an external source like another Davis station, I have to suspect that you have a problem with your console. In that case you really should get in touch with Davis technical support:
https://support.davisinstruments.com/If you need answers it is best to carve out some time and wait in line on the phone for a technical support person.
Sorry you find yourself in this predicament. By all means keep us posted and let us know what you discover.
Cheers, Edouard