We have not enough rain. I know that without any app. Because always, when the traditional magnolia bloom in northern Alsace, it rains a lot. The splendour often lasts only a few days.
Now we've only had grey, dry days. Wonderful to see the flowers. But bad for the drying soil.
If you connect nature's calendar with "traditional" remembered weather you can see the shift: https://www.cronenburg.net/magic/