Sept 30 (Reuters) - Chicago Federal Reserve Bank President Charles Evans on Thursday said he believes that the supply shocks that are pushing up on prices now will ease next year, and low interest rates will still be needed to bring U.S. inflation back durably to 2%. "Let"s be patient and not declare victory on inflation," Evans said in an online webinar with Princeton University"s Bendheim Center for Finance. Inflation, he said, will likely fall back to around 2.1% next year and could rise to 2.4% in 2023 as the Fed begins what he anticipates will be a very gradual pace of interest rate increases. If inflation does rise above that level, he said, he would want to tighten policy more quickly, but that"s not his expectation. His read on a wide range of measures of inflation expectations does not suggest recent high inflation readings are getting entrenched into the long-term trajectory for U.S. prices. Inflation expectations "are not getting out of hand," Evans said, adding that his worry continues to be whether even now they are high enough to be consistent with the Fed"s 2% target. "We"ve underrun our 2% inflation expectation almost since we announced it in 2012." Reporting by Ann Saphir; Editing by Andrea Ricci