HAMWeather should run out of the box; however, the "Current Conditions" section may have a bunch of N/As listed. If you don't, don't worry about this - you're fine. If you do, it's because the database doesn't know the closest airport to you (where it gets the current temp info from).
These instructions If you get N/As, there are for the unregistered version (which two options. The first is what to register; the app installs). If you register, they send developer will set you up with a database update with make all this unnecessaryevery US city and the closest airport, with no work on your part. See their website for details.
After installing the fileThe alternative, if you'll need re in the US, is to download this run a script to let the program know the closest airport to you. The scriptis located at:
http://wiki.amahi.org/images/e/e8/Install_pt2.sh
Once you're done, you can delete the install_pt2.sh file, since you're done. If you want to add extra cities in the future, re-run it with different cities and airports.
If your city isn't found by the scriptor you're outside the US, you can follow the directions below.
If you're outside the US or To add your city isn't foundinformation, you need to edit the SQL database, using the instructions from:
http://www.hamweather.com/kb/index.php?article=21