This is what app developers are ought to do:
In theory, Alexa should read the temps from Homey in °Celsius, if your location uses °Celsius in general.
What’s the standard unit in your country?
You can convert the “Alexa thinks it’s °F” values to “°C values for Alexa”, with use of an advanced virtual device;
Then you should have that virtual device report to Alexa, instead of the original device.
Result example:
Left: sensor °C,
Right: virtual sensor with the “Alexa thinks it’s °F” values converted to “°C values for Alexa” :
Setting:
BLL expression used:
Math.round(5/9*($value-32))
No flows needed! It gets calculated with every temperature value update.
Note: You’ll need to install the Better Logic app as well for this to function
