US crude oil production fell to near 13.7 million barrels a day in December, marking a six-month low, according to the Energy Information Administration. The monthly decline signals a notable shift in domestic output after months of steady production levels.

December's production figure represents a drop from previous months, though the report did not specify the exact prior levels or the magnitude of the decline. The EIA tracks US oil production through its monthly reports, which are closely watched by energy traders and analysts for insights into supply trends.

The production decrease comes amid fluctuating oil prices and varying drilling activity across major US shale regions. Market participants will be watching subsequent reports to determine if this marks the beginning of a sustained downward trend or a temporary fluctuation in output.