A relief rally, after the US Federal Reserve decided yesterday to keep interest rates at historic lows, predominantly led to the positive mood across the emerging financials and currency markets.
Trading at 65.72 per dollar, the rupee has not seen this seen since August 27.
Buoyant domestic stock market and dollar's weakness against other currencies overseas also weighed on sentiment.
On the global front, the dollar is trading substantially weak against other major currencies.
US dollar index, which measures the greenback's strength against a trade-weighted basket of six major currencies, was down by 0.30 per cent at 94.30.
The rupee resumed stronger at 66.15 as against Wednesday's closing of 66.46 at the Interbank Foreign Exchange (Forex) market.