Is Rachio incomplete without knowing soil moisture? Our weather forecasts are notoriously inaccurate. The extent to which large and micro cells grow and dissipate makes forecasting even a few minutes ahead somewhat difficult. Yesterday for instance we had a 90% chance of rain at 1pm according to WU. We didn’t get a drop though 1 mile south got 3/4" over a 2 hr period.
In many cases if my lawn soil is somewhat moist then taking a risk on a forecast would be warranted. If it’s quite dry though then how much confidence do I have in the forecast and the amount of rain that I’ll get? How much risk do I take?
A rain gauge can run in to problems if we get a lot of rain on top of fairly dry soil. While the gauge may have a considerable level of water in it, the ground was dry and much of the water ran off in to a rain garden or storm sewer rather than soaking in. At least the rain in the rain garden will eventually percolate to the aquifers rather than go down the storm sewer but it won’t help our still dry lawn very much.
How does Rachio compensate for the lack of knowing soil moisture?