The U.S. dollar strengthened on Monday as currency markets reassessed the Federal Reserve’s interest-rate outlook ahead of a closely watched U.S. inflation report. The move followed Friday’s unexpectedly weak employment data, which reduced expectations for a near-term rate increase, while renewed gains in oil prices introduced a potentially conflicting signal for inflation.

Dollar Gains Despite Lower Rate-Hike Expectations

The U.S. Dollar Index rose 0.20% to 99.80, while the euro slipped 0.13% to $1.1542. The dollar’s advance came despite a significant reduction in market expectations for a September Federal Reserve rate hike, demonstrating that currency markets remain sensitive to several competing factors rather than responding solely to changes in rate expectations.

Fed funds futures traders are now pricing in a 52% probability of a September hike, compared with 67% a week earlier. The shift followed a much weaker-than-expected U.S. jobs report, which showed declining payrolls and raised questions about whether the labor market can support tighter monetary policy.

The change in expectations is important for global investors because the Federal Reserve’s policy path remains a major driver of currency valuations, Treasury yields and international capital flows. A softer labor market could reduce pressure on the central bank to raise rates, but stronger inflation data could complicate that interpretation.

U.S. CPI Becomes the Next Major Policy Test

Wednesday’s July consumer price index report is therefore likely to become the next major test for markets. A renewed acceleration in inflation could revive expectations for a September rate increase, potentially supporting the dollar and putting upward pressure on Treasury yields. Conversely, softer price data could reinforce the recent shift toward a less restrictive Federal Reserve outlook.

Markets will also receive additional economic signals later in the week. Producer price data is due Thursday, followed by retail sales figures on Friday. Together, the reports could help determine whether the weakness in the labor market is occurring alongside moderating price pressures or whether inflation remains sufficiently persistent to constrain the Federal Reserve.

The interaction between employment, inflation and energy prices is particularly important at present. Oil prices had eased from recent highs on hopes for progress toward ending the Iran conflict, but prices jumped more than 4% on Monday after the United States and Iran exchanged demands that appeared to reduce the likelihood of an immediate agreement to reopen the Strait of Hormuz.

Yen Weakness Highlights Currency-Specific Risks

The Japanese yen was among the biggest movers, falling 0.84% to 159.14 per dollar, its steepest daily decline in almost five months. The currency has given back part of the intervention-driven gains recorded earlier in August but remains stronger than its multi-decade low of roughly 164 reached late last month.

The yen’s position remains particularly sensitive to monetary-policy divergence and potential official intervention. Speculators reduced their net short yen position by $8.865 billion in the week through August 4, leaving the position at $3.604 billion, according to Commodity Futures Trading Commission data cited by Reuters. At the same time, speculative net long positions in the dollar reached their highest level since December 2022.

Looking ahead, U.S. CPI will be the immediate focus for currency and fixed-income markets, with the inflation result potentially reshaping expectations for the Federal Reserve’s September decision. Investors will also need to monitor oil prices, developments around the Strait of Hormuz and subsequent U.S. producer-price and retail-sales data. The key risk is a renewed divergence between weakening employment conditions and persistent inflation, which could leave markets facing greater uncertainty over the dollar, Treasury yields and global currency flows.