Hi!!
I have two stacks of Cisco 3850's and both of them are reporting that the temperature is around 4 degrees Celsius. I have had both Solarwinds Support and Cisco Support look at this.
We did a SNMPWALK to check the MIB's and they seem correct, but when it comes to posting the temperatures in NPM, they are way off.
The switches say they are a happy 25 degrees Celsius. That I can beleive becasue my closet is at a comfortable temerature.