Problem when trying to get CPU temperature using WMIC

Question

I’m creating a program for Windows and need to get the user’s CPU temperature. For this task I am using the wmic with the following code in batch:

@echo off

for /f "delims== tokens=2" %%a in (
    'wmic /namespace:\\root\wmi PATH MSAcpi_ThermalZoneTemperature get CurrentTemperature /value'
) do (
    set /a degrees_celsius=%%a / 10 - 273
)

echo %degrees_celsius% GRAUS
pause

The problem is that the temperature shown is always 64 GRAUS and the original return of wmic is the temperature in Kelvin of 3372. I did several tests to confirm whether this temperature was correct or not. I turned off the computer and waited a while for the CPU to cool, opened temperature measurement programs, and the result of that program in batch was always the same.

I’m doing something wrong, it’s some problem in the wmic or the lack of any resource on my computer ?

Answer 1

I managed to do on Windows 8.1, but when I went to try the same batch on Windows 10 it didn’t work (I tried to run it on Windows 10 by remote connection because I don’t have access to a real Windows at the moment.

@echo off
Title Mostrando a temperatura da CPU
:start
for /f "skip=1 delims=" %%a in ('"wmic path Win32_PerfRawData_Counters_ThermalZoneInformation get temperature"') do set /a Temperatura_Kelvin=%%a& goto Calculos

:Calculos
set /a Temperatura_Celcius=(%Temperatura_Kelvin%*100)-27315
set /a inteiros=%Temperatura_Celcius:~0,-2%
set /a quebrados=%Temperatura_Celcius:~-2%
set Temperatura_Celcius=%inteiros%,%quebrados%
set /a Temperatura_Fahrenheit=(%Temperatura_Kelvin% * 100 - 27315) * 9 
set /a Sobra_Fahrenheit=%Temperatura_Fahrenheit% %% 5
set /a Temperatura_Fahrenheit=%Temperatura_Fahrenheit% / 5
set /a inteiros=%Temperatura_Fahrenheit:~0,-2% + 32
set /a quebrados=%Temperatura_Fahrenheit:~-2% + %Sobra_Fahrenheit%
set Temperatura_Fahrenheit=%inteiros%,%quebrados%
cls
echo.
echo.
echo   Temperatura da CPU: %Temperatura_Celcius%ø Celcius ^| %Temperatura_Kelvin% Kelvin ^| %Temperatura_Fahrenheit%ø Fahrenheit
echo.
timeout /t 1 > Nul
goto :start

For some reason whenever you use the formula to convert Kelvin to Celcius (Kelvin - 273.15 = Celcius) always remains a rest of 85 or 15....