I think the majority of what you're after is available in tabular form in the year over year statistics (available from the Tools menu->Statistics within WeatherCat or via the STYEAROVERYEAR$ web tag, see
https://live.trixology.com/custom/ for an example) - this has averages for each month as well as the average overall for all years for each month.
For an individual month use in a tag you can use the time range specifiers to pull out each month - for example:
STAT$TEMPERATURE:AVERAGE:2026-06-01/2026-06-30$ gives the average temperature for June this year.
For more examples, again see
https://live.trixology.com/custom/ (scroll down to the Individual Stats section).
What you can't currently do in a tag is pull out the high average or low average or the average for a month over all years - I'll add this to the feature request list, thanks for the suggestion
