The path to the WeatherCat date is ~Library/WeatherCatData/Location1/YEAR/MONTH.cat
Where ~Library is your hidden User Library, not the System Library, and YEAR/MONTH are whatever data you want to review. To expose you hidden library, use the "Go" menu, and press "Option" key.
You can add the various statistical information by using the following tags in you HTML, as shown on the Statistics tab on my web page.
STRECORDS$
STRECENT$
ST1$