I visit a website http://www.rainlog.org and it is amazing at what you can find. Notice this little rainfall day we had in Arizona on November 22, 2013 – notice 2.70 inches at the 101 and Thunderbird Road area. Click on the map and see if you can find this area.
Termites and bugs in general all need water, but termites in Arizona become active after rainfall activity. The other reason for sharing this information is that this website is good for every area in the U.S. Another reason to use this site, is after a treatment for scorpions and you can judge effectiveness of the pesticide you are using.