At around 1:30 a.m. ET, the yield on the benchmark 10-year Treasury note was lower at 0.5708%, while the yield on the 30-year Treasury bond was also down at 1.2286%. Yields move inversely to prices.

The U.S. central bank voted to keep its benchmark overnight lending rate anchored near zero, where it has been since March 15.

The Federal Opening Market Committee also underlined its commitment to maintaining its bond purchases and the array of lending and liquidity programs associated with the response to the coronavirus outbreak.

On the data front, the latest weekly jobless claims will be released at 8:30 a.m. ET. Advanced second-quarter real gross domestic product (GDP) figures and advanced second-quarter GDP prices will both be released at the same time.

The U.S. Treasury will auction $35 billion in eight-week bills and $30 billion in four-week bills on Thursday.

— CNBC’s Jeff Cox contributed to this report.