Final weigh-ins have now concluded, with McGregor and 'Cowboy' both tipping the scales at the welterweight limit of 170lbs.
Elsewhere, there is plenty more build-up to get through after a packed media day in Las Vegas, in addition to reaction from Wednesday's rather civil press conference.
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UFC 246 date, UK start time and venue
UFC 246 takes place on Saturday, 18 January at the T-Mobile Arena in Las Vegas.
That Vegas setting means it will be an early start for UK fight fans with the main event expected to begin at approximately 5am in the early hours of Sunday morning.
Will there be a live stream? How can I watch it?
McGregor vs Cerrone is will be broadcast live on BT Sport Box Office, currently priced at £19.95.
Prelims and undercard
Holly Holm vs Raquel Pennington
Aleksi Oleinik vs Maurice Greene
Claudia Gadelha vs Alexa Grasso
Anthony Pettis vs Carlos Diego Ferreira
Roxanne Modafferi vs Maycee Barber
Andre Fill vs Sodiq Yusuff
Drew Dober vs Nasrat Haqparast