Automation condition based on weather forecast for the next day

Configuration
,
22

Please post code in the topic rather than via a link.

You’re doing this:

conditions:
  - condition: numeric_state
    entity_id: sensor.openweathermap_temperature
    above: 50
  - condition: numeric_state
    entity_id: sensor.openweathermap_wind_speed
    below: 15
  - condition: template
    value_template: |
      {% set rain_in_3_days = daily_forecast['weather.openweathermap'][:3]
         | selectattr('precipitation', 'defined')
         | selectattr('precipitation', '>', 0)
         | list %}
      {{ rain_in_3_days | length == 0 }}
actions:
  - alias: Get forecast for the next 3 days
    data:
      type: daily
    target:
      entity_id: weather.openweathermap
    response_variable: daily_forecast
    action: weather.get_forecasts

The problem here is that you’re trying to refer to the daily_forecast variable in your third condition, which is before it exists, and outside the scope in which it will later exist.

Solution options are:

  1. Create a template sensor that contains the forecast and refer to that in the condition; or
  2. Move the condition test into the actions section after it’s been defined.

I’d go with the first option, as you can then use the forecast data elsewhere in your system.