Rupee weakened by 6 paise to 66.58 against the dollar in early trade at the Interbank Foreign Exchange market largely due to month-end demand for the U.S. currency from importers.The month-end demand from banks and importers and a lower opening of the domestic equity market mainly weighed.A weakness in the U.S. dollar against some currencies in the fall, they added.

Global market hit by weaker-than-expected durable goods orders data, however, limited the on the rupee, forex dealers said.