The weekly average yield to maturity of The Bond Buyer Municipal Bond Index, which is based on 40 long-term bond prices, climbed to 4.09% from 4.08% the week before.
The Bond Buyer's 20-Bond GO Index of 20-year general obligation yields dipped one basis point to 4.19% from 4.20% in the previous week. It is at its lowest level since Jan. 3, when it was at 4.09%.
The 11-bond GO Index of higher-grade 11-year GOs fell one basis point to 3.68% from 3.69% in the previous week. It is at its lowest level since it was at 3.58% two weeks ago.
The Bond Buyer's Revenue Bond Index was also one basis points lower to 4.66% from 4.67% the week before. It is at its lowest level since Jan. 3, when it was at 4.56%.
The yield on the U.S. Treasury's 10-year note nudged up to 2.75% from 2.74%, while the yield on the 30-year Treasury rose to 3.08% from 3.05%.