The Brewers actually have done pretty well in day games to finish a series so far this season. But, like a lot of things, the perception is probably skewed by a few clunkers in the last few weeks, specifically home games against the Nats, Padres, and Phillies.
In just road series, where the Brewers always have to move on to a new city after the game, they are 8-3, 6-2 in day games.