CPI 3% in January
Core inflation, which ignores movements in food and energy prices, rose 0.3% in January, the biggest increase since June.
Economists were looking for a 0.1% gain on the CPI and for a 0.2% gain on the core CPI.
In December, the CPI rose 0.5%, while the core CPI was up 0.1%.
Energy prices declined, falling 1.5% after a 4.2% gain in December. Gasoline and natural gas prices fell 3%.
Food prices jumped 0.7%, the largest gain in nearly two years. Stormy weather in
Shelter prices rose 0.3%. Owners' equivalent rent, which represents nearly a fourth of the CPI, increased 0.2%, the smallest increase in a year. Rents rose 0.4%. Hotel fares increased 1.1%.
Medical care prices rose 0.8%, the most in 16 years. Prescription drug prices jumped 1.1%, also the biggest increase in 16 years after falling for three months in a row. Physician services prices rose 1.2%, the most in 26 years.
Apparel prices rose 0.3%