The coastal village of Barrow, Alaska (71.3° N, 156.5° W) is the northernmost settlement in the United States. With 4000 residents, it is also the largest native community in the circumarctic region. Installation of the 67-site Barrow Urban Heat Island Study network in 2001 facilitated a detailed examination of the spatial characteristics of summer air temperature within a 150 km2 area incorporating Barrow and its surroundings. Although the summers of 2001 and 2002 were climatologically unusual, the record clearly illustrates the control of a local maritime gradient, as well as a close correspondence between temperature distribution and wind regime. In contrast to the situation in winter, the effects of local urban infrastructure on air temperatures were relatively minor during these summers, compared to those of maritime and wind influences.