Green, who has led since her 64 on Friday, stayed in the lead at 13-under as Sunday play was suspended for the night due to darkness at 7pm local time.
The 20-year-old - currently fourth on the money list and already guaranteed a spot on the LPGA Tour next year - is being closely pursued by American Katelyn Dambaugh at 11-under, while Americans Allison Emrey and Elizabeth Szokol are next best at 10 under and 9 under respectively.
The final-round of the IOA Golf Classic started at 2:45pm on Sunday about 45 minutes after the second-round concluded.
The final-round will resume on Monday, October 2 at 8:30am.
No groups finished on Sunday so there are still 21 groups and 61 players who need to finish.
Dambaugh, who ranks 12th on the money list, drained a 20-footer on hole nine about 10 minutes before the horns blew to suspend play. Green, who was playing one group behind Dambaugh, responded with a 30-footer on nine just a minute before play was called for the night.
Green will aim for her third win of the season. She won the Sara Bay Classic and the Murphy USA El Dorado Shootout. If Green pockets the $22,500 first place prize, she would eclipse $100,000 in season earnings and likely move from fourth to third on the money list.
It would be the first time in Tour history that three players have earned at least $100,000 in a single season.
Green would also join Denmark's Nanna Koerstz Madsen as a three-time Symetra Tour winner in 2017.
2017 PLAYER PROFILE: HANNAH GREEN
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