The weekly average yield to maturity of The Bond Buyer Municipal Bond Index, which is based on 40 long-term bond prices, fell to 4.01% from 4.02% the week before.
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The Bond Buyer's 20-Bond GO Index of 20-year general obligation yields dipped one basis point to 3.94% from 3.95% the previous week. It is at its lowest level since July 26, when it was at 3.90%.
The 11-Bond GO Index of higher-grade 11-year GOs lowered by one basis point to 3.42% from 3.43% the previous week. It is at its lowest level in four weeks.
The Bond Buyer's Revenue Bond Index decreased one basis point to 4.44% from 4.45% last week. It is at its lowest level since July 26, when it was at 4.40%.
The yield on the U.S. Treasury's 10-year note was down to 2.82% from 2.87%, while the yield on the 30-year Treasury dropped to 2.97% from 3.03%.