Cubs manager Joe Maddon said before the game that the umpires consulted with both him and Brewers manager Craig Counsell regarding the weather forecast.
"The umpires are very aware of starting pitchers and what they mean in today's game," Maddon said. "They don't want either side to lose their starting pitcher through a long rain delay."
The Brewers return to Wrigley Field Aug. 16-18 and Sept. 15-18.
It's the first game postponed by weather for both teams this season.
Carrie Muskat has covered the Cubs since 1987, and for MLB.com since 2001. She writes a blog, Muskat Ramblings. You can follow her on Twitter @CarrieMuskat and listen to her podcast. This story was not subject to the approval of Major League Baseball or its clubs.