The last 6 'Crop Evapotranspiration' numbers, for one of my zones, as reported from an MID weather station about 0.9 mi away from me, are:
0.15 0.13 0.14 0.13 0.12 0.12
Today, as a forecast value from Rachio's weather forecasting system for my lat and long, it's
And the next 7 day forecast values, again from Rachio, are
0.13 0.17 0.15 0.17 0.15 0.15 0.18
This illustrates the problem with Rachio I've observed all year long. Rachio's forecasting of Crop Evapotranspiration is higher than what it ends up being from the MID weather station 0.9 miles away.
This causes my schedules to many times appear to have water days coming up, only to find at the 45 minute in advance of actual watering (at 12:15 AM) that the Current Moisture Balance has been recomputed using the actual for the day.
In the heat of the summer, switching from a forecasted to an actual Crop Evapotranspiration was a significant change for me every night.
I look forward to when the forecasted Crop Evapotranspiration numbers for my location are not so aggressively computed.