Geographers are familiar with Ellsworth Huntington's influential, yet frequently derided claims about climatic determinism, eugenics and the progress of civilization. His work on weather and mortality in New York City, a study conducted under the auspices of the National Research Council and the extensive collaboration of New York based life insurance companies, offers a different insight into Huntington's approach. While the results of this 1920s research project had a limited impact on the field, the work that produced it represents one of the earliest examples of using computing technology in the atmospheric sciences.Drawing on archival research at Yale University and the National Academy of Sciences, the paper argues that not only can Huntington be considered pioneering in his use of early computers, the use of such machines constrained the research in important ways. The limited funding and processing capabilities of early computers, standardised punch card designs, necessary labor and staff time, and clerks' learned practices, all came to define the research project. This demonstrates that early computers did not simply enable more efficient numerical analysis of geographical problems, but rather they were part of socio-technical configurations that were co-emergent from the situated development of technologies within user communities.