"The market is maybe taking a calmer approach to the FBI probe at this point than it was on Friday afternoon," said Shahab Jalinoos, global head of FX strategy at Credit Suisse in New York.
News of the probe hurt the dollar since Clinton is viewed as the candidate of the status quo, and a win for the Democratic candidate in next week's U.S. presidential election is generally seen by analysts as likely to be positive for the dollar.
A Clinton win is also viewed as clearing the way for the Federal Reserve to raise interest rates in December. There is greater uncertainty over what a victory for Republican candidate Donald Trump might mean for U.S. foreign policy, international trade deals and the domestic economy.
"This is just corrective price action, a little bit of a giveback," said Richard Scalone, co-head of foreign exchange at TJM Brokerage in Chicago, in reference to gains in major dollar rivals such as the euro, yen and sterling on Friday.
The dollar's rebound was modest, with the currency last up just 0.28 percent against the yen at 104.98 yen, still down from a three-month high of 105.530 yen touched Friday.
The Mexican peso, which hit a three-week low against the dollar of 19.1002 pesos on Friday, was last up 0.47 percent at 18.8702 pesos per dollar. The currency fell on news of the FBI probe since Trump's stances on immigration and trade relations are seen as key risks for the Mexican currency.