If you already use Home Assistant, using the InfluxDB integration, coupled with Grafana will allow you to create very useful data visualizations that offers insight into your home over time. This includes things like: what are the humidity level fluctuations? What is the temperature indoors compared to outdoors? And much more ...
Many weather sensors just report a cumulative rainfall amount to their display unit. That is, when installed the sensor will start with 0 millimeters, and then as rain falls, it will just keep adding to that number, until the sensor loses power, or is reset.
Since it took me a long time to reach a working solution, I am posting this information to save people looking for the same hours and hours of fruitless searching, and frustrating experimentation.
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