The 28-year-old American is the highest ranked player in the field and was flocked by umbrella-carrying fans as he made his way around the course on Friday.
Patrick Rodgers made four straight birdies on the back nine to take the lead at 11-under par until rain and then darkness also delayed his round after 15 holes.
The 25-year-old former Stanford University standout has yet to make a bogey at the tournament.
Fowler shares second place with Patton Kizzire, who completed his round and carded a 70 on Friday, a day after he managed a career-low round of 62.
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His biggest hiccup on Friday was a double bogey on the 10th hole amid the wet and windy conditions.
The 2005 OHL Classic champion Brian Gay shot a 65 in the morning to climb the leaderboard and end at 9-under par and tied for fourth with Brandon Harkins.
Jonathan Byrd gave the crowd a thrill when he hit a 135-yard tee shot for an ace on the par-3 8th hole, the second hole-in-one in as many days. On Thursday Kevin Mitchell used a 6-iron to hit an ace on the 10th hole.
Defending champion Pat Perez, who was five shots off the lead at the end of play on Thursday, could not sustain that level of play in the second round as he dropped down the leaderboard after carding a 74 that left him tied for 69th.
(Reporting by Rory Carroll; editing by Sudipto Ganguly)
