@Captn Avenger wrote:

For those interested, here is a link to a report commissioned by the Irrigation Association with the EWRI and ASCE to develop a standarized reference ET equation. This report includes all of the formulas needed to develop the data needed to compute the reference ET.


The NWS has climate reports are available for free from thier FTP site, which may be an option if you live relatively close to one of thier observation sites.


Do you know if there’s a page to search for the nearest site?