Google Hub can do the same and better. Before I go to sleep, I say “Hey Google, bed time”, then Google Assistant’s standard routine will tell me tomorrow’s weather, then ask me what time do I want to set up the alarm, turn off the bedside lights, then start playing the cricket sound (customizable)
I have similar discussion in the Automator Forum and was told that Siri or Apple Shortcut would not allow me to replicate the same routine, as shortcut would not run voice command (at least for now)