There's times when we observe or hear about clever ideas from other locations, even different continents. I read about one today in the Weekly Times Now published in Australia. Their article describes a service that dairy producers can register to get an e-mail message whenever the combination of heat and humidity gets high enough to limit milk production.
The Cool Cows website is part of the Grains2Milk project in Australia. There's a number of publications written for the Australian conditions, and the part where you can register to get a warning e-mail.
This would be something that any US public or private dairy adviser could put together for the dairy producers is her/his area. The temperature and humidity combination's that limit milk production are well known. An adviser could then create a program by establishing a web-page with links to publications and other resources. A warning e-mail could then be sent to dairy producers when those conditions arise.
Examples of good publications include one from DAIReXNET in eXtension that describes the evaluation and selection of cooling equipment for different locations. The folks from Kansas State University Extension also have some good publications on this issue.
It's cold here in North America at the moment, but there's time for someone to get this program established and promoted before the weather gets hot.
Hope that helps.