A new study confirms the accuracy of adjustments to the U.S. temperature record. The study assesses the adjustments to correct for station moves, instrument changes, and other problems at U.S. historic temperature measurement stations. Raw and adjusted data from the stations were compared to data from the new pristinely-located U.S. Climate Reference Network. The adjustments make records for normal stations much more similar to those of nearby Climate Reference Network stations. This provides an important empirical test of the impact of temperature adjustments, and increases our confidence that adjustments are effective at dealing with localized biases while improving our estimate of longer-term U.S. temperature changes.