The Accuweather web site has made finding the "holes in the weather" (if they exist) possible. Real time radar is such a great piece of information. It's not hard to learn how to gauge clear spots, and to leave work a half-an-hour early if that's going to get you home dry. You can look at the radar and see if the storms are concentrated "cells" or widely dispersed, slow or fast moving, and figure out if (mostly) dry riding is possible.
Modify the following URL and paste it into your browser to see the real-time weather radar in your area, right now:
http://www.accuweather.com/radar-local.asp?partner=accuweather&zipcode="YOUR ZIPCODE HERE, NO QUOTES"