Hi Keith,
I posted the following reply on the Cumulus Support Forum also
The Saratoga template uses two main files for weather data:
1) realtime.txt (uploaded by Cumulus/MX at frequent intervals and used by the ajaxCUwx.js JavaScript to update SOME of the weather data)
2) CUtags.php (uploaded at 5 minute intervals by processing the CUtags.txt files into CUtags.php)
The CUtags.php is controlled by the Extra Web Files upload screen. realtime.txt is a selection in the Internet Settings/Web FTP Settings.
The Saratoga templates do not use the new websitedata.json file, that is only for the new default html templates.