World Cities by Climate: Plotted by Temperature & Rainfall
graph by Julie Peasley; slow reveal by Jenna Laib
Type of Graph: Scatterplot
Purpose
This slow reveal is designed to support analysis and discussion of both the data and the design choices. The questions in the slide deck invite learners to examine trends, relationships, and possible interpretations. In particular, there are questions that ask students to consider variables along a single axis (e.g. “which city is warmer, on average?”) before integrating the two variables of temperature and rainfall. Students are also asked to consider the benefits and challenges of reducing a year’s worth of climate data into a single data point (e.g. “what does it mean that London is listed as being 51°F?”) This can also launch into a conversation about climate compared with weather.
About This Graph
This visualization is not provided for reuse or redistribution. Readers and educators are encouraged to view the original visualization in its published context.
Original Visualization: Peasley, Julie. “World Cities by Climate.” Voronoi: December 9, 2025.
Data Source: climate-data.org
In The Classroom
There are many different mathematical connections that can be made to this data and data visualization.
Potential Math Content: scatterplots, bivariate data, comparing values, averages, scale along the y-axis, scale along the x-axis
Potential Content Connections: climate, cities, geography, science
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