Retail sales and producer prices fell last month, worrisome signals on the economy's health that heightened financial market worries over faltering growth.
Import prices fell in September for the third straight month as the cost of petroleum products declined and a strong dollar made European goods cheaper.
The Fed's debate on whether to change its interest rate guidance heated up last month, with officials saying the central bank risked misleading investors.
Charles Plosser, a leading inflation "hawk" at the Federal Reserve, announced Monday that he plans to retire March 1.
Consumer prices fell for the first time in nearly 18 months last month, which could lessen the urgency for the Federal Reserve to raise interest rates.
Financial markets are awaiting the end of a Federal Reserve meeting Wednesday for any clearer signal about the timing of an interest rate increase.
Producer prices were flat in August, pointing to muted inflation pressures that should see the Federal Reserve in no hurry to raise interest rates.
The economy strengthened in all regions of the country in July and August, in areas from consumer spending to auto sales to tourism, the Fed reports.
Consumer sentiment rose in August, while an index of current economic conditions hit its highest in 7 years, a survey from the University of Michigan shows.
Consumer spending unexpectedly fell in July as savings rose to its highest level in nearly 2 years, a sign that households remain cautious despite growth.
A majority of economists believe the Federal Reserve is doing the right things to help repair the U.S. economy, a new survey shows.
Federal Reserve Chair Janet Yellen is to address an annual Fed conference, and investors will be seeking any hints of when the Fed will start raising rates.
Some Fed officials think the economy is improving fast enough that they'll need to raise interest rates sooner than previously expected.
Consumer prices barely rose in July as declining energy costs partially offset increases in food and rents.
A federal report finds that an American child born last year will cost a middle-income family an average of more than $245,000 until adulthood.
Producer prices rose marginally in July as a decline in the cost of energy goods offset higher food prices, pointing to a moderation of inflation pressures.
After a grim start to 2014, the economy has rebounded with vigor, but whether the Fed will raise interest rates sooner than expected remains unclear.
The Fed presses ahead with its plan to wind down its bond-buying stimulus, while reaffirming it is in no rush to raise interest rates.
An improving economy could force the Fed to shift into rate hiking gear sooner than it would like, some Fed watchers say.
Consumer prices rose in June as the cost of gasoline surged, but the overall trend continued to point to a gradual build up of inflationary pressures.