How to use pressure reading to forecast weather


I am taking pressure readings from an influx db into Grafana and plotting them.

I would like to be able to forecast from the pressure reading, using some basic rules.

For example,
If the pressure reading is falling within the past 3hr time period, then it might indicate rain and so forth.

Can I build these kinds of basic rules and plot them in Grafana?

Sorry if this is a basic newbie question. just looking for some pointers in the right direction.