Still, the prospect that rising yields will continue burnishing the dollar's attractiveness has given pause to some investors betting on more declines in the greenback.
Osamu Takashima, head of G10 FX strategy at Citigroup Global Markets Japan in Tokyo, said that he remained bearish on the dollar, with dollar assets looking "expensive".
President-elect Joe Biden, who takes office on Jan. 20 with Democrats able to control both houses of Congress, has promised "trillions" in extra pandemic-relief spending.
As a result, the euro fell 0.5% to $1.2155, its lowest since Dec. 21, down nearly 2% from a high of $1.2349 last week.
But the impact of a stricter lockdown in South Africa announced by President Cyril Ramaphosa is still to play out on the currency and the stock market locally.
Three-month copper on the London Metal Exchange rose 1.4% to $7,898.50 a tonne by 0239 GMT, while the most-traded February copper contract on the Shanghai Futures Exchange was almost flat at 58,720 yuan ($8,991.65) a tonne.