Change yr weather units of measure

Configuration
1

I am just getting started with HA. I have units of measure set to Imperial in configuration.yaml and the Yr temperature is showing as degrees F which is good.

However, wind speed, barometric pressure, and precipitation show in metric units.

I see that there are options in Configuration|Customization for unit_of_measurement, but I can’t figure out what the allowable values are.

For instance, if I change unit_of_measurement for Weather Pressure (sensor) to inHg, and restart HA, the label on the home page changes to InHg, but the value displayed is still hPa. Likewise if I change wind speed to mph, the label changes to mph but the value displayed is still m/s.

My customize.yml is being updated.

sensor.weather_wind_speed:
unit_of_measurement: mph
sensor.weather_pressure:
unit_of_measurement: inHg

I have looked at the source code at …/homeassistant/components/sensor/yr.py, but saw nothing there that helped. I have Googled and have not found an answer.

How can I fix this?

Thanks!

2

The customization will only change the label displayed, but will NOT convert the value. To change the value you can use a template sensor to convert.

But perhaps changing the unit_system will do.

3

I already have

unit_system: imperial

set in configuration.yaml, so that is not sufficient.

I’ll look into Template Sensor, thanks…

4

The darksky sensor supports different metrical systems, perhaps it’s more convenient to switch?

5

This looks good, I’ll give it a try. Thanks for the tip!

6

If you want to stick with YR, you could do something like this:

# Weather convert wind speed
  - platform: template
    sensors:
      wind_speed_mph:
        unit_of_measurement: "mph"
        value_template: "{{states('sensor.pws_wind_kph')|float|round / 1.609 }}"

Change sensor.pws_wind_kph to the one YR uses.

1 Like
7

Here is the code from my configuration.yaml. I have tried quite a few variations but I can’t figure out the syntax of the value_template. Can you please explain? The only thing that displays is wind_speed_mph with a dash in the icon. All the other values are not displayed. The default unit of measurement is meters/sec, I want to convert to mph and display it.

Weather prediction

sensor:

  • platform: yr
    name: Weather
    forecast: 24
    monitored_conditions:
    • temperature
    • symbol
    • precipitation
    • windSpeed
    • pressure
    • windDirection
    • humidity

sensor:

  • platform: template
    sensors:
    wind_speed_mph:
    unit_of_measurement: “mph”
    value_template: “{{states(sensor.yr_windSpeed_ms)|float|round * 2.23694 }}”

Thanks!

8

Have you tried the template value in the template editor?

You can trial and error there. Start with part of your value and expand from there.

{{ states(sensor.yr_windSpeed_ms) }}
{{ states(sensor.yr_windSpeed_ms) | float }}

Etc.

To start with I think the sensor name needs to be quoted.

{{ states('sensor.yr_windSpeed_ms') }}
9

Well, I finally got it working. The tip about the template editor was a good one.

This code is working:

Weather prediction

sensor:

  • platform: yr
    name: Weather
    forecast: 24
    monitored_conditions:

    • temperature
    • symbol
    • precipitation
    • windSpeed
    • pressure
    • windDirection
    • humidity

  • platform: template
    sensors:
    weather_wind_speed_mph:
    friendly_name: “Weather Wind Speed”
    unit_of_measurement: “mph”
    value_template: “{{states(‘sensor.weather_wind_speed’)|float * 2.23694 | round(0) }}”

It displays Weather Wind Speed in mph to one decimal point.

I have to say, to do what would appear to be a simple change of units was pretty painful.

There were several gotcha’s along the way. I found that the - platform template section had to be in the sensor section with yr. If it was in a separate sensor section, none of the yr sensors showed up. The wind speed in yr needed to be monitored, I needed to define a new sensor name wind_speed_mph, and finally hide the yr wind_speed. Finding the correct state name for the yr variable was not obvious.

Thanks to all of you who responded to my question; without your help it would have taken a lot longer to figure out. I have searched the HA docs and googled the problem for several hours. I could find nothing that helped.

If there is a cleaner way to accomplish this, please let me know!

Thanks again…

10

Try this:

# Weather convert wind speed
  - platform: template
    sensors:
      wind_speed_mph:
        unit_of_measurement: "mph"
        value_template: "{{(states('sensor.weather_wind_speed')| float * 2.23694) | round(1) }}"

You’ll still need to have windSpeed in your YR config. But you can hide it with the customizing function.

11

Yes, thanks for your reply! This is essentially what I got working above. Since then I have added conversions for pressure and precipitation. These are formatted as floats. I had to change the quotes around the format string to single quotes from an example I found on the net. With double quotes around the format string HA would not start at all. Also, I found that I had to invert the conversion factors for pressure and precipitation and divide rather than multiply by a small decimal number. When multiplying by a number less than one, the result was zero. I hope these clues will help others.

Here is just the template section:

  • platform: template
    sensors:
    weather_wind_speed_mph:
    friendly_name: “Weather Wind Speed”
    unit_of_measurement: “mph”
    value_template: “{{states(‘sensor.weather_wind_speed’)|float * 2.23694 | round(0) }}”
    weather_pressure_inhg:
    friendly_name: “Weather Pressure”
    unit_of_measurement: “inHg”
    value_template: “{{’{0:.2f}’.format(states(‘sensor.weather_pressure’)|float / 33.76895 )}}”
    weather_precipitation_in:
    friendly_name: “Weather Precipitation”
    unit_of_measurement: “in”
    value_template: “{{’{0:.1f}’.format(states(‘sensor.weather_precipitation’)|float / 25.4 )}}”

As you note, the YR sensors need to be hidden.

Thanks again…

1 Like
12

Ah sorry :slight_smile:

I didn’t read your last post completely.
Have to blame it on my headache :face_with_head_bandage:

13

I am also trying to change the YR wind speed units from m/s to km/h. The conversion factor is 3.6. I have searched in many threads to get this done with templates, however everything I have tried so far displays either a dash (-) in the new ‘bubble’ (in the frontend), or 0.0. I can’t get this to work. Can anybody help? Here’s my configuration.yaml code:

- platform: template
sensors:
  new_windspeed:
    friendly_name: 'Vent'
    value_template: "{{ states('sensor.yr_windspeed.state') | float * 3.6 | round (1) }}"
    unit_of_measurement: 'km/h'

Capture

14

Sure helped me. Big thanks.