The 30 players who did not complete the round will resume at 8 a.m. local time (12000 GMT) on Sunday, and officials expect to have the tournament completed by the scheduled finish.
Snedeker, on 16-under-par, leads by three from Brian Gay, who had completed 12 holes, with four others on 12-under.
Snedeker knows he will have to keep attacking to hold off the charging pack on a course that invariably yields low scores.
"If I get to 22-under-par, I think it's hard for other guys to get there," said the eight-times PGA Tour winner.
"I'm not saying it can't happen, but that number seems to hold up here pretty well, so that's kind of the number I have in my mind."
Snedeker, who shot a 59 in the opening round before adding a 67 on Friday, made an unlikely birdie at the second hole on Saturday when his 60-foot downhill putt from off the green went in at considerable pace, the cup providing a perfect backstop.
"I was just trying to get close and got lucky there, made a bomb and got some good momentum going," he said.
"Played some solid golf after that, nothing great. Didn't hit enough fairways really to have a bunch of birdie opportunities, but kind of managed it really, really well.
"So two-under-par through seven holes and still got a lead, that's all positive."
He picked up another stroke at the par-five fifth, where he drained a 10-footer.
Michael Thompson was the clubhouse leader at 11-under after shooting 63, while Spaniard Sergio Garcia was also on 11-under after nine holes.
Snedeker is prepared for a long Sunday.
"Somebody's going to make a run and go really low and my job is to try to match that as best I can," he said.
(Reporting by Andrew Both in Cary, North Carolina; Editing by Peter Rutherford)
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