The rally will be at 9 a.m. at Century II. Doors open at 8 a.m. and the caucus starts at 10 a.m.
Trump will then travel to Orlando, Florida later Saturday for a rally.
Trump decided not to attend the Conservative Political Action Conference on Saturday.
The American Conservative Union, which holds CPAC, wrote: “Very disappointed realDonaldTrump has decided at the last minute to drop out of #CPAC — his choice sends a clear message to conservatives.”