I have two exterior temperature sensors (front and back). I created a template sensor to report their average:
-template:
- sensor:
- name: "Outside"
unit_of_measurement: 'ºF'
device_class: temperature
state: "{{ (((states('sensor.outside_back_temperature') | float) + (states('sensor.outside_front_temperature') | float)) / 2) | round(1) }}"
It shows just fine on my main dashboard, but it is not available as an entity exportable to Alexa (whereas the two physical sensors are).
I want to be able to ask Alexa “What is the outside temperature?” and have her report the average. Not have to ask for individual sensors.