evidence: During the year following the initial release of the 1991-2020 station-based U.S. Climate Normals in May 2021, National Weather Service Forecast Offices submitted inquiries regarding the Normals at a total of 60 stations. Staff at NCEI carefully adjudicated each inquiry in collaboration with its NWS partners. At 21 stations, NWS staff was able to provide data additions and corrections, and NCEI staff recalculated or added the affected normals parameters based on the updated data records. In most cases, changes the monthly normals were <0.5°C for temperature, <0.1 in for precipitation, and <0.5 in for snowfall. At two additional sites, certain normals parameters were removed because they were judged to be inaccurate, and no correction to the underlying data was feasible. The following stations were affected by changes in one or more of their Normals parameters. [...] During the temperature data homogenization process, abrupt but real changes in sea ice on the west and northern coasts of Alaska could be mistaken for artificial air temperature changes at stations close to the coast (north of 70°N or west of 160°W). To address this issue, we replaced the homogenized temperature records with original observations that were quality controlled but not homogenized, and reran the normals process. Normals at 18 stations within this zone were slightly modified. In addition, normals for 7 stations near the zone were under the influence of the coastal stations for filling missing data or estimating normals, and also had changed values.