This might turn out to be either a silly mistake or a misunderstanding of something more fundamental. I’m having trouble to even search for this. I thought I had a good grasp on this.
I have a numeric template sensor (old format):
- platform: template
sensors:
outside_temperature:
friendly_name: "Outside Temperature"
device_class: temperature
value_template: >-
{{ state_attr('weather.openweathermap_daily', 'temperature') | float }}
icon_template: >-
mdi:thermometer
But when I open the more info popup in Lovelace, it’s displayed as if it’s a text/categorical value:
The other sensors render as expected:
Now, it might be important to add: I only discovered this (oddly) last week after I’ve been using this for a very long time (more than a year). That’s when I added the | float to cast it, but it made no difference. I can’t figure out where the type inference might be happening.
Perhaps also relevant is that my recorder retention period is 7 days.
I’ve also directly queried my DB to check for any oddities:
homeassistant=> select * from states where entity_id like '%outside_temperature%' order by created desc limit 3;
-[ RECORD 1 ]+---------------------------------------------------------------------------------------------------
state_id | 27753118
domain | sensor
entity_id | sensor.outside_temperature
state | 12.8
attributes | {"friendly_name": "Outside Temperature", "icon": "mdi:thermometer", "device_class": "temperature"}
event_id | 32022397
last_changed | 2021-08-24 21:36:39.89558+02
last_updated | 2021-08-24 21:36:39.89558+02
created | 2021-08-24 21:36:39.89558+02
old_state_id | 27751251