Weather - getting tomorrow's forecast temp into a helper

[tom_l]

Did you read this one?

Getting Back To The Legacy 'forecasts' System for Weather

This topic has come up several times and I’ve had to copy and paste my code every time I answer, so I thought it would be easier to just put it on a topic instead. As you know if you are reading this, the forecast attribute on weather entities was phased out quite some time ago, and finally removed from HA officially a few releases ago. NOTE The reason the forecast attribute got removed was to reduce unnecessary database bloat, due to the way attributes are stored in the database, …