USGS has a useful set of maps depicting the number of dry days or wet days in a row counting back from the current date.  You can find them at https://earlywarning.usgs.gov/usraindry.  Check out the map below showing the number of days since it has rained!  Hat tip to Scott Doering, my Facebook friend, for sharing them.

number-of-days-since-rain-11-4-2016