Forex dealers said fresh demand for the US unit and a weak opening of the domestic equity market weighed on the rupee.
However, dollar's weakness against other currencies overseas after a US presidential election poll showed Donald Trump ahead of market favourite Hillary Clinton minimised the loss, they said.
Yesterday, the rupee had closed 8 paise higher at 66.71 against the US dollar on sustained dollar unwinding from exporters and banks at the Interbank Forex Exchange market.