Thanks, Mike, and good morning, everyone. To be consistent with previous reporting, as I discuss our third quarter results, I'm excluding the impact of unrealized noncash mark-to-market adjustments on our commodity hedges, which resulted in an $11.1 million unrealized gain in the third quarter of 2021, compared to a $900,000 unrealized gain in the prior year, along with certain other noncash adjustments in both years and a loss on debt extinguishment resulting from the refinancing of our 2024 and 2025 senior notes in the third quarter of fiscal 2021.
Given the seasonal nature of our business, we typically experience a net loss in the third quarter of our fiscal year. With that said, the net loss for the third quarter was $20.9 million or $0.33 per common unit, compared to $15.5 million or $0.25 per common unit in the prior year. Adjusted EBITDA for the third quarter was $23.3 million, compared to $32.2 million in the prior year. As Mike indicated, our earnings in the prior year third quarter represented a record level of earnings and benefited from several factors, including cool spring temperatures that contributed to strong residential demand, strong blended unit margins due to volume mix skewed toward residential, and savings from various cost containment efforts that we implemented to insulate the business from potential downside risks resulting from COVID-19 effects. Compared to pre-pandemic results, adjusted EBITDA for the third quarter was $3.2 million or 16% higher than the third quarter of 2019 due to solid volume and unit margin performance.
Retail propane gallons sold in the third quarter were 76.7 million gallons, which was 1.7% higher than the prior year, primarily due to an increase in commercial and industrial demand, resulting from the easing of COVID-related business restrictions and an improving economy that more than offset a more normalized level of residential demand. Residential volumes in the prior year third quarter benefited from cooler average temperatures in April and May of 2020, combined with stay-at-home measures instituted in the early stages of the pandemic. The mix of volumes between residential and nonresidential customers return to more traditional pre-pandemic level, during the third quarter of fiscal 2021, with commercial and industrial volumes increasing 14% compared to the prior year and residential volumes decreasing 14%.
Overall, average temperatures across our service territories for the third quarter were 9% warmer than normal and the prior year third quarter, and for the months of April and May, average temperatures were 13% warmer than the same period last year. In the commodity markets, wholesale propane prices remain elevated compared to the prior year as U.S. inventory levels remain considerably below average levels for this time of the year. Although U.S. propane production has increased, production gains have been largely offset by domestic demand and continued strength in the export market. Overall, average wholesale prices for the third quarter were $0.87 per gallon, basis Mont Belvieu, which was 112% higher than the prior year third quarter and 4% lower than the second quarter of fiscal 2021. In early part of the fourth fiscal quarter, propane prices have moved higher and are currently in the range of $1.05 to $1.10 per gallon.
Excluding the impact of the mark-to-market adjustments that I mentioned earlier, total gross margins of $143.9 million for the third quarter decreased $2.5 million or 1.7% compared to the prior year, primarily due to the mix of volumes, which include a lower concentration of higher-margin residential volumes compared to the prior year. Propane unit margins for the quarter were $0.04 per gallon lower than the prior year, but reflected an improvement of $0.04 per gallon compared to the third quarter of fiscal 2019, which had a more comparable and typical volume mix.
With respect to expenses, excluding noncash pension settlement charges in both periods, combined operating and G&A expenses increased $7.3 million or 6.5% compared to the prior year, primarily due to higher volume-related variable operating costs as well as an increase in self-insured medical costs and higher vehicle lease costs, partially offset by lower provisions for doubtful accounts. As we reported earlier in the fiscal year, our accounts receivable aging profile has returned to pre-pandemic levels, which historically has been very strong and resulted in a more normalized bad debt provision compared to the higher amount reported in the prior year due to the estimated impact of COVID on collections at that time.
I'd also point out than our prior year expenses reflected savings associated with the operational plans that we developed and implemented to address the potential different customer demand scenarios resulting from COVID, including a temporary reduction to our manpower. Our manpower levels during the current year third quarter were reflective of more normalized levels for this time of the year. Net interest expense of $16.7 million for the third quarter decreased $1.7 million compared to the prior year, primarily due to lower average debt outstanding as well as a decrease in short-term benchmark interest rates on borrowings under our revolver and the impact of the refinancing of the 2 tranches of senior notes at lower rates that Mike mentioned earlier. This refinancing will result in a net interest expense and cash savings of approximately $7 million annually, extend our average debt maturity profile by more than 3.5 years and pushes the overall weighted average debt maturity to nearly 8 years. In addition, with this opportunistic refinancing, we shifted $125 million of debt within our capital structure from bonds to the revolver, which not only decreased our interest requirement and extended debt maturities, but will also allow for efficient debt repayments in the future to facilitate our debt reduction strategy.
Total capital spending for the third quarter of $7.5 million was $1.9 million higher than the prior year due to a higher but more normalized level of spending on vehicles and tanks to support organic customer base growth.
Then turning to our balance sheet. During the third quarter, we used excess cash flows to repay $29.8 million of debt. With the debt repayment, our total debt outstanding as of June 2021 was $83 million lower than June of last year, and our consolidated leverage ratio at the end of the third quarter was 3.96x. We remain focused on utilizing excess cash flows to further strengthen the balance sheet as we trend towards our target leverage profile of 3.5x debt to EBITDA, and as opportunities arise to fund strategic growth.
Back to you, Mike.