These data were obtained on shrub tundra (Salix richardsonii) in the Canadian high Arctic, in Qarlikturvik valley on Bylot Island at 73°11'N, 79°45'W. A 1-year time series of these variables is presented between 20 June 2018 and 1 July 2019. The variables are air temperature, soil temperature at 0 and15 cm depth, and snow temperature at 5.8 cm above ground surface. Snow height and snow thermal conductivity at 3 cm, 13 cm, and 26 cm heights are also presented. Soil moisture content and thermal conductivty at 5 and 15 cm depths are given. Finally, two snow density profiles measured in mid-May 2019 are provided. These data are in support of the article Domine et al. (2022) Nature Geoscience, DOI: XXX
