A growing body of research examines how climatic variables such as precipitation and temperature and particularly exposure to adverse natural disasters (droughts, floods and storms) in early life can influence later life outcomes.  This Technical Note details the process of selecting, preparing and matching external data for climate variables to the locations of the communities the Young Lives study participants live in.  The authors select specific data on monthly total precipitation and average air temperature, using a global gridded terrestrial time series dataset.  This data matching widens the usefulness of the already rich demographic Young Lives dataset, allowing the impacts of climate on children and young adults across key stages of development to be quantified. The authors go on to detail the structure and content of the publicly archived dataset and how it may be used.