U.S. consumer prices increased by the most in five months in June amid higher costs for some goods, suggesting tariffs were starting to have an impact on inflation and potentially keeping the Federal Reserve on the sidelines until September, Reuters reported.

Softening demand as consumers hunker down, however, is limiting price increases for services like airline fares and hotel and motel rooms, keeping underlying inflation muted for now. That trend, if sustained, could ease concerns of a broad-based rise in price pressures from tariffs.

Nonetheless, economists generally expect the tariff-induced rise in inflation to become more evident in the July and August CPI reports, arguing that businesses were still selling merchandise accumulated before President Donald Trump announced sweeping import duties in April. They also noted that when Trump slapped tariffs on washing machines in 2018, it took several months for the duties to show up in the inflation data.

Trump last week announced higher duties would come into effect on August 1 for imports from a range of countries, including Mexico, Japan, Canada and Brazil, and the European Union, according to Reuters.