[This post is marked as unsolved] Rain season bug
Sorry for this issue, it's a bug in Weather Station (assuming you've set a clientraw station). It's due to a bug fixe done to correct another bug (sorry, it's a french user who have reported it).
This issue will be corrected in the 3.4 version of Weather Station which will be released in january. For now you can do it manually with: measure_type='rain_year_aggregated'... because season values doesn't exist in clientraw files.
If you like Weather Station, please consider to make a review to help make it known. That would be the best way to thank me...