The ratio of bids to the amount offered was 3.22, the lowest level since 3.09 set at a one-month T-bill auction held on Jan. 20.
This gauge of overall auction demand was lower than the 3.44 at the prior auction last week.
The latest one-month issue was sold at an interest rate of 0.280 percent, higher than prior week's 0.275 percent.
This was the second straight week that the government offered a record $60 billion of one-month T-bills.