@uladz. I'm not sure if cloud cover falls into solar radiation, but this article suggests most of the rest of your expectations should be met: http://support.rachio.com/article/386-flex-schedule
From the article:
"Then based on the weather station that your Iro is utilizing (whether that be an official station or a personal station) we are gathering the following data on a zone by zone basis:
- Evapotranspiration levels
- Minimum and Maximum Temperature
- Solar Radiation
- Relative Humidity"
Check your weather station to see if it's reporting the information. I know I had to change my station from the default as there was another one nearby that was more accurate.