Weniger posted a score of 9.700 in the event on Sunday, as the Pipers fell in a dual meet at Whitewater, 185.175-177.800.
The score was Weniger's highest on floor exercise at Hamline, her previous personal best being a 9.550 at last year's regionals.
Brynn Stenslie (Sr., Renton, Wash.), Molly Weber (So., Taos, N.M.) and Alisha Anderson (Sr., Spring Lake Park, Minn.) also recorded top-three event finishes.
Stenslie was second on the balance beam with a score of 9.350. Weber tied for third on the same apparatus with a 9.150.
Anderson was third on the uneven bars with a score of 9.525.
The Pipers travel to UW-La Crosse on Tuesday, January 27, for the "Beauty and the Beast Meet" at 6:30 p.m.