I have copied my comment and question to this category as it was not responded to in its original forum location. Any input is appreciated:
Thank you for the quick response. I think making a PWS default for Canadian users of your hardware a good start, and I would ask that you also make this limitation clear in the documentation and resources you provide online. This may be a new request suggestion, but would it be terribly difficult for your software to allow a Canadian user such as myself (or any user for that matter) to manually define a collection of trusted, local PWSs, then have WI+ interpolate the precipitation data for just the chosen stations?