Surging prices for gas, food and rent catapulted U.S. inflation to a new four-decade peak in June, further pressuring households and likely sealing the case for another large interest rate hike by the Federal Reserve, with higher borrowing costs to follow.

Consumer prices soared 9.1% compared with a year earlier, the government said Wednesday, the biggest 12-month increase since 1981, and up from an 8.6% jump in May. On a monthly basis, prices rose 1.3% from May to June, another substantial increase, after prices had jumped 1% from April to May.

The ongoing price increases underscore the brutal impact that inflation has inflicted on many families, with the costs of necessities, in particular, rising much faster than average incomes. Lower-income and Black and Hispanic Americans have been hit especially hard, because a disproportionate share of their income goes toward such essentials as housing, transportation and food.

Some economists have held out hope that inflation might be reaching or nearing a short-term peak. Gas prices, for example, have fallen from the eye-watering $5 a gallon reached in mid-June to an average of $4.66 nationwide as of Tuesday — still far higher than a year ago but a drop that could help slow inflation for July and possibly August.

In addition, shipping costs and commodity prices have begun to fall. Pay increases have slowed. And surveys show that Americans' expectations for inflation over the long run have eased — a trend that often points to more moderate price increases over time.

In a statement, President Joe Biden seemed to echo this sentiment, saying that while prices are "unacceptably high," he posited that Wednesday's figures are "out-of-date."

"Energy alone comprised nearly half of the monthly increase in inflation," Biden wrote. "Today’s data does not reflect the full impact of nearly 30 days of decreases in gas prices, that have reduced the price at the pump by about 40 cents since mid-June. Those savings are providing important breathing room for American families. And, other commodities like wheat have fallen sharply since this report."

Biden also made the case that so-called "core inflation," which excludes more volatile items like food and energy, "came down for the third month in a row" to below 6% for the first time since last year.

Yet for now, the relentless spike in inflation has caused a steep drop in consumers' confidence in the economy, sent President Biden's approval ratings tumbling and posed a major political threat to Democrats in the November congressional elections. Forty percent of adults said in a June AP-NORC poll that they thought tackling inflation should be a top government priority this year, up from just 14% who said so in December.

Biden called inflation "our most pressing economic challenge" and sought to posit blame on Russia's invasion of Ukraine and the aftermath of the COVID-19 pandemic's impact on global markets.

"[Inflation] is hitting almost every country in the world," the president wrote. "It is little comfort to Americans to know that inflation is also high in Europe, and higher in many countries there than in America. But it is a reminder that all major economies are battling this COVID-related challenge, made worse by [Russian President Vladimir] Putin’s unconscionable aggression."

In the immediate aftermath of the 2020 pandemic recession, as Americans focused their spending on items for the home, like furniture, appliances and exercise equipment, supply chains became overwhelmed and prices for physical goods soared. But as consumer spending has gradually shifted away from goods and toward services like vacation travel, restaurants meals, movies, concerts and sporting events, some of the highest price increases have occurred in services.

Housing, in particular, has been seized by some of the highest inflation rates in the economy, causing hardships for many. A shortage of houses for sale has sent home prices skyrocketing just as mortgage rates have also soared.

With many people priced out of the market for houses and looking instead to rent, demand for apartments has sent rental rates beyond affordable levels. The national median home price jumped 14.8% in May from a year earlier to $407,600. That's an all-time high according to data to 1999, according to the National Association of Realtors.

Biden pledged to do everything in his power to reduce gas prices, urged Congress to act on legislation to reduce costs for American families, including on prescription drugs, insurance premiums and utility bills, and said he will give the Federal Reserve the independence it needs to address the crisis.

The persistence of high inflation has unnerved Chair Jerome Powell and other Fed officials, who are engaged in the fastest series of rate hikes since the late 1980s to try to slow the price spikes. The central bank is expected to raise its key short-term rate later this month by a hefty three-quarters of a point, as it did last month, with potentially more large rate hikes to follow.

Powell has stressed that the central bank wants to see "compelling evidence" that inflation is slowing before it would dial back its rate hikes. Such evidence would need to be a "series of declining monthly inflation readings," Powell said at a news conference last month.

Many economists worry that the Fed's drive to quell inflation will cause it to tighten credit too aggressively even while the economy, by some measures, is slowing. Much higher borrowing costs could trigger a recession, potentially by next year.

Consumers have started to pull back on spending, home sales are falling as mortgage rates rise and factory output slipped in May. Yet steadily robust job growth points to an economy that is still expanding, with little sign of an imminent recession.

Though inflation is likely to slow later this year, it's not clear by how much. Oil prices fell Tuesday to about $96 a barrel. And other commodities, including metals such as copper, have also become less expensive, mostly because of recession fears in both the United States and Europe.

With fewer ships stuck at the Port of Los Angeles and Long Beach, America's largest, shipping costs for international freight have fallen. Wholesale gas prices have fallen to about $3.40 a gallon, which suggests that retail prices could drop to as low as $4.20 by August, according to Omair Sharif, founder of Inflation Insights.

And wholesale used car prices are also falling, which point to declining used car prices in the coming months.

Yet plenty of items are still rising in price, notably apartment rents. The average cost of new leases has jumped 14% in the past year, according to real estate brokerage Redfin, to an average of $2,016 a month.

Rents as measured by the government's inflation index have risen more slowly because they include all rents, including existing leases. But economists expect the rising expense of new leases to send the government's inflation measure higher in coming months.

Inflation has spiked overseas as well. It reached 9.1% in the United Kingdom in May, the highest level in four decades, driven mostly by higher gas and food prices. Annual inflation in the eurozone's 19 countries hit 8.6% in June, surging past the 8.1% recorded in May. Inflation is now at its highest level since recordkeeping for the euro began in 1997.