WASHINGTON — U.S. consumers slowed their spending by 0.2% in December, cutting back for a second straight month in a worrisome sign for an economy struggling under the weight of a still out-of-control pandemic.

The decline reported Friday by the Commerce Department followed a seasonally adjusted 0.7% drop in November. It was the latest sign that consumers, whose spending is the primary driver of the U.S. economy, are hunkered down and avoiding traveling, shopping and dining out. Since making a brief bounce-back from the viral pandemic last spring, consumer spending has barely grown.

Friday’s report from the government also showed that personal incomes, which provide the fuel for spending, rose a modest 0.6% after two months of declines. Yet Americans who have been fortunate enough to keep their jobs have been largely stockpiling savings rather than spending. That could bode well for the economy later this year, once consumers feel more willing and are more able to spend.

The latest figures reflect a shaky economy. On Thursday, the government estimated that the economy grew at a 4% annual rate in the final three months of 2020 but shrank last year by the largest amount in 74 years. At the same time, the job market is faltering, with nearly 10 million jobs still lost to the pandemic. Hiring has slowed for six straight months, and employers shed jobs in December for the first time since April.

The outlook for 2021 remains uncertain. Economists warn that a sustained recovery won’t likely take hold until vaccines are successfully distributed and administered nationwide and government-enacted rescue aid spreads through the economy, which could take months. In the meantime, millions of individuals and businesses continue to struggle.