"I have a five year old and my daughter's 19 months, and we're expecting a third," Daly said on the show. "For years my mom was like, 'When are you going to have a kid?' And now she's like, 'Slow down!'"
Daly and his food blogger fiancee welcomed their first son Jack in March 2009. The couple's second child, a daughter named Etta Jones, was born in September 2012. The couple became engaged in October 2013.
Daly, a Today Show correspondent, also talked about his new gig during his interview with Fallon.
"I tell people The Today Show is like TRL for adults," he quipped.
Celebrity Couples of 2014 [PHOTOS]