Average temperature value during the last month

[peltsi51]

With this app it should be possible if you have advanced flows in use

[APP][Pro] Insight Trends Reloaded

Insight Trends With the help of Homey’s insightful features, you can view all sensor measurements and their historical evolution. Take it a step further and do more than just observe the insights; act accordingly or even glimpse the future a little. [xlarge] You can choose an insight (a device and a capacity, such as the outside temperature), as well as a timeframe to analyze. The outcomes will then be computed as follows: Trend a number between -1 and 1 that indicates whether the sensors’…