August was likely the calm before the storm for sports bettors in Iowa.

Iowans got a brief taste of college football last month, which helped boost legal sports wagering to $108.42 million, according to data issued Monday by the state Racing & Gaming Commission. But the main course of full-blown betting on college and professional sports this month is expected to generate a new spike in Iowa’s gambling activity, officials said.

“We did see a bounce back in the month of August,” said Brian Ohorilko, commission administrator. “What’s unknown is what we can expect in the fall this year once we have a full slate of activity.”